500!

Das ist ein Fehler.

Es tauchte ein Fehler im Server auf, der verhinderte, dass die Anfrage nach "/rc" erfüllt werden konnte.

java.lang.RuntimeException: Couldn't marshal class de.urmel_dl.dbt.rc.datamodel.slot.SlotList to output class org.jdom2.transform.JDOMResult.
	at de.urmel_dl.dbt.utils.EntityFactory.lambda$new$1(EntityFactory.java:139)
	at de.urmel_dl.dbt.utils.EntityFactory.toDocument(EntityFactory.java:341)
	at de.urmel_dl.dbt.rc.servlets.SlotListServlet.doGetPost(SlotListServlet.java:269)
	at org.mycore.frontend.servlets.MCRServlet.doGet(MCRServlet.java:184)
	at org.mycore.frontend.servlets.MCRServlet.render(MCRServlet.java:502)
	at org.mycore.frontend.servlets.MCRServlet.processRenderingPhase(MCRServlet.java:467)
	at org.mycore.frontend.servlets.MCRServlet.doGetPost(MCRServlet.java:318)
	at org.mycore.frontend.servlets.MCRServlet.doGet(MCRServlet.java:156)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRWebAppBaseFilter.doFilter(MCRWebAppBaseFilter.java:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRRequestAuthenticationFilter.doFilter(MCRRequestAuthenticationFilter.java:57)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRRequestDebugFilter.doFilter(MCRRequestDebugFilter.java:75)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:673)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:340)
	at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:431)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1744)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: java.lang.reflect.InvocationTargetException
	at jdk.internal.reflect.GeneratedMethodAccessor202.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at de.urmel_dl.dbt.utils.EntityFactory.lambda$new$1(EntityFactory.java:137)
	... 43 more
Caused by: jakarta.xml.bind.MarshalException
 - with linked exception:
[java.util.ConcurrentModificationException]
	at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:550)
	... 47 more
Caused by: java.util.ConcurrentModificationException
	at java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1013)
	at java.base/java.util.ArrayList$Itr.next(ArrayList.java:967)
	at org.eclipse.persistence.internal.queries.InterfaceContainerPolicy.next(InterfaceContainerPolicy.java:346)
	at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:1207)
	at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:88)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshal(XMLCompositeCollectionMappingNodeValue.java:103)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:151)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.record.ObjectMarshalContext.marshal(ObjectMarshalContext.java:67)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:451)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:432)
	at org.eclipse.persistence.internal.oxm.XPathObjectBuilder.buildRow(XPathObjectBuilder.java:247)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:127)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:50)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshalSingleValue(XMLCompositeCollectionMappingNodeValue.java:346)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshal(XMLCompositeCollectionMappingNodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:151)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.record.ObjectMarshalContext.marshal(ObjectMarshalContext.java:67)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:451)
	at org.eclipse.persistence.internal.oxm.XPathObjectBuilder.buildRow(XPathObjectBuilder.java:247)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:127)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:50)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:786)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:559)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:512)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:1030)
	at org.eclipse.persistence.oxm.XMLMarshaller.marshal(XMLMarshaller.java:200)
	at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:546)
	... 47 more

java.lang.reflect.InvocationTargetException
	at jdk.internal.reflect.GeneratedMethodAccessor202.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at de.urmel_dl.dbt.utils.EntityFactory.lambda$new$1(EntityFactory.java:137)
	at de.urmel_dl.dbt.utils.EntityFactory.toDocument(EntityFactory.java:341)
	at de.urmel_dl.dbt.rc.servlets.SlotListServlet.doGetPost(SlotListServlet.java:269)
	at org.mycore.frontend.servlets.MCRServlet.doGet(MCRServlet.java:184)
	at org.mycore.frontend.servlets.MCRServlet.render(MCRServlet.java:502)
	at org.mycore.frontend.servlets.MCRServlet.processRenderingPhase(MCRServlet.java:467)
	at org.mycore.frontend.servlets.MCRServlet.doGetPost(MCRServlet.java:318)
	at org.mycore.frontend.servlets.MCRServlet.doGet(MCRServlet.java:156)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRWebAppBaseFilter.doFilter(MCRWebAppBaseFilter.java:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRRequestAuthenticationFilter.doFilter(MCRRequestAuthenticationFilter.java:57)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRRequestDebugFilter.doFilter(MCRRequestDebugFilter.java:75)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:673)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:340)
	at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:431)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1744)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: jakarta.xml.bind.MarshalException
 - with linked exception:
[java.util.ConcurrentModificationException]
	at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:550)
	... 47 more
Caused by: java.util.ConcurrentModificationException
	at java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1013)
	at java.base/java.util.ArrayList$Itr.next(ArrayList.java:967)
	at org.eclipse.persistence.internal.queries.InterfaceContainerPolicy.next(InterfaceContainerPolicy.java:346)
	at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:1207)
	at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:88)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshal(XMLCompositeCollectionMappingNodeValue.java:103)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:151)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.record.ObjectMarshalContext.marshal(ObjectMarshalContext.java:67)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:451)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:432)
	at org.eclipse.persistence.internal.oxm.XPathObjectBuilder.buildRow(XPathObjectBuilder.java:247)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:127)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:50)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshalSingleValue(XMLCompositeCollectionMappingNodeValue.java:346)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshal(XMLCompositeCollectionMappingNodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:151)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.record.ObjectMarshalContext.marshal(ObjectMarshalContext.java:67)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:451)
	at org.eclipse.persistence.internal.oxm.XPathObjectBuilder.buildRow(XPathObjectBuilder.java:247)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:127)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:50)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:786)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:559)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:512)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:1030)
	at org.eclipse.persistence.oxm.XMLMarshaller.marshal(XMLMarshaller.java:200)
	at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:546)
	... 47 more

jakarta.xml.bind.MarshalException
 - with linked exception:
[java.util.ConcurrentModificationException]
	at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:550)
	at jdk.internal.reflect.GeneratedMethodAccessor202.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at de.urmel_dl.dbt.utils.EntityFactory.lambda$new$1(EntityFactory.java:137)
	at de.urmel_dl.dbt.utils.EntityFactory.toDocument(EntityFactory.java:341)
	at de.urmel_dl.dbt.rc.servlets.SlotListServlet.doGetPost(SlotListServlet.java:269)
	at org.mycore.frontend.servlets.MCRServlet.doGet(MCRServlet.java:184)
	at org.mycore.frontend.servlets.MCRServlet.render(MCRServlet.java:502)
	at org.mycore.frontend.servlets.MCRServlet.processRenderingPhase(MCRServlet.java:467)
	at org.mycore.frontend.servlets.MCRServlet.doGetPost(MCRServlet.java:318)
	at org.mycore.frontend.servlets.MCRServlet.doGet(MCRServlet.java:156)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRWebAppBaseFilter.doFilter(MCRWebAppBaseFilter.java:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRRequestAuthenticationFilter.doFilter(MCRRequestAuthenticationFilter.java:57)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRRequestDebugFilter.doFilter(MCRRequestDebugFilter.java:75)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:673)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:340)
	at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:431)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1744)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: java.util.ConcurrentModificationException
	at java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1013)
	at java.base/java.util.ArrayList$Itr.next(ArrayList.java:967)
	at org.eclipse.persistence.internal.queries.InterfaceContainerPolicy.next(InterfaceContainerPolicy.java:346)
	at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:1207)
	at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:88)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshal(XMLCompositeCollectionMappingNodeValue.java:103)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:151)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.record.ObjectMarshalContext.marshal(ObjectMarshalContext.java:67)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:451)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:432)
	at org.eclipse.persistence.internal.oxm.XPathObjectBuilder.buildRow(XPathObjectBuilder.java:247)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:127)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:50)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshalSingleValue(XMLCompositeCollectionMappingNodeValue.java:346)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshal(XMLCompositeCollectionMappingNodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:151)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.record.ObjectMarshalContext.marshal(ObjectMarshalContext.java:67)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:451)
	at org.eclipse.persistence.internal.oxm.XPathObjectBuilder.buildRow(XPathObjectBuilder.java:247)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:127)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:50)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:786)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:559)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:512)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:1030)
	at org.eclipse.persistence.oxm.XMLMarshaller.marshal(XMLMarshaller.java:200)
	at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:546)
	... 47 more

java.util.ConcurrentModificationException
	at java.base/java.util.ArrayList$Itr.checkForComodification(ArrayList.java:1013)
	at java.base/java.util.ArrayList$Itr.next(ArrayList.java:967)
	at org.eclipse.persistence.internal.queries.InterfaceContainerPolicy.next(InterfaceContainerPolicy.java:346)
	at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:1207)
	at org.eclipse.persistence.internal.queries.ContainerPolicy.next(ContainerPolicy.java:88)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshal(XMLCompositeCollectionMappingNodeValue.java:103)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:151)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.record.ObjectMarshalContext.marshal(ObjectMarshalContext.java:67)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:451)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:432)
	at org.eclipse.persistence.internal.oxm.XPathObjectBuilder.buildRow(XPathObjectBuilder.java:247)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:127)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:50)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshalSingleValue(XMLCompositeCollectionMappingNodeValue.java:346)
	at org.eclipse.persistence.internal.oxm.XMLCompositeCollectionMappingNodeValue.marshal(XMLCompositeCollectionMappingNodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:151)
	at org.eclipse.persistence.internal.oxm.NodeValue.marshal(NodeValue.java:104)
	at org.eclipse.persistence.internal.oxm.record.ObjectMarshalContext.marshal(ObjectMarshalContext.java:67)
	at org.eclipse.persistence.internal.oxm.XPathNode.marshal(XPathNode.java:451)
	at org.eclipse.persistence.internal.oxm.XPathObjectBuilder.buildRow(XPathObjectBuilder.java:247)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:127)
	at org.eclipse.persistence.internal.oxm.TreeObjectBuilder.buildRow(TreeObjectBuilder.java:50)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:786)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:559)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:512)
	at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:1030)
	at org.eclipse.persistence.oxm.XMLMarshaller.marshal(XMLMarshaller.java:200)
	at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:546)
	at jdk.internal.reflect.GeneratedMethodAccessor202.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at de.urmel_dl.dbt.utils.EntityFactory.lambda$new$1(EntityFactory.java:137)
	at de.urmel_dl.dbt.utils.EntityFactory.toDocument(EntityFactory.java:341)
	at de.urmel_dl.dbt.rc.servlets.SlotListServlet.doGetPost(SlotListServlet.java:269)
	at org.mycore.frontend.servlets.MCRServlet.doGet(MCRServlet.java:184)
	at org.mycore.frontend.servlets.MCRServlet.render(MCRServlet.java:502)
	at org.mycore.frontend.servlets.MCRServlet.processRenderingPhase(MCRServlet.java:467)
	at org.mycore.frontend.servlets.MCRServlet.doGetPost(MCRServlet.java:318)
	at org.mycore.frontend.servlets.MCRServlet.doGet(MCRServlet.java:156)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:564)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRWebAppBaseFilter.doFilter(MCRWebAppBaseFilter.java:41)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRRequestAuthenticationFilter.doFilter(MCRRequestAuthenticationFilter.java:57)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.mycore.frontend.filter.MCRRequestDebugFilter.doFilter(MCRRequestDebugFilter.java:75)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:174)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:673)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:340)
	at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:431)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:896)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1744)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:840)