I get following exeption in the logs frequently:
2023-07-26 07:30:42.189 [WARN ] [ache.cxf.phase.PhaseInterceptorChain] - Interceptor for {http://internal.id.core.openhab.org/}UUIDResource has thrown exception, unwinding now
org.apache.cxf.interceptor.Fault: XML_WRITE_EXC
at org.apache.cxf.jaxrs.interceptor.JAXRSDefaultFaultOutInterceptor.handleMessage(JAXRSDefaultFaultOutInterceptor.java:106) ~[bundleFile:3.4.5]
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308) ~[bundleFile:3.4.5]
at org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:112) ~[bundleFile:3.4.5]
at org.apache.cxf.phase.PhaseInterceptorChain.wrapExceptionAsFault(PhaseInterceptorChain.java:374) ~[bundleFile:3.4.5]
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:332) ~[bundleFile:3.4.5]
at org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:90) ~[bundleFile:3.4.5]
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308) ~[bundleFile:3.4.5]
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121) ~[bundleFile:3.4.5]
at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:265) ~[bundleFile:3.4.5]
at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234) ~[bundleFile:3.4.5]
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208) ~[bundleFile:3.4.5]
at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160) ~[bundleFile:3.4.5]
at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:225) ~[bundleFile:3.4.5]
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:298) ~[bundleFile:3.4.5]
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:222) ~[bundleFile:3.4.5]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:497) ~[bundleFile:4.0.4]
at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:273) ~[bundleFile:3.4.5]
at org.ops4j.pax.web.service.spi.servlet.OsgiInitializedServlet.service(OsgiInitializedServlet.java:102) ~[bundleFile:?]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1656) ~[bundleFile:9.4.50.v20221201]
at org.ops4j.pax.web.service.spi.servlet.OsgiFilterChain.doFilter(OsgiFilterChain.java:100) ~[bundleFile:?]
at org.ops4j.pax.web.service.jetty.internal.PaxWebServletHandler.doHandle(PaxWebServletHandler.java:310) ~[bundleFile:?]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:600) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:505) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:234) ~[bundleFile:9.4.50.v20221201]
at org.ops4j.pax.web.service.jetty.internal.PrioritizedHandlerCollection.handle(PrioritizedHandlerCollection.java:96) ~[bundleFile:?]
at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:772) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.Server.handle(Server.java:516) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034) ~[bundleFile:9.4.50.v20221201]
at java.lang.Thread.run(Thread.java:833) ~[?:?]
Caused by: com.ctc.wstx.exc.WstxIOException: Closed
at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:262) ~[?:?]
at org.apache.cxf.jaxrs.interceptor.JAXRSDefaultFaultOutInterceptor.handleMessage(JAXRSDefaultFaultOutInterceptor.java:104) ~[bundleFile:3.4.5]
... 54 more
Caused by: org.eclipse.jetty.io.EofException: Closed
at org.eclipse.jetty.server.HttpOutput.checkWritable(HttpOutput.java:771) ~[bundleFile:9.4.50.v20221201]
at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:795) ~[bundleFile:9.4.50.v20221201]
at org.apache.cxf.io.AbstractWrappedOutputStream.write(AbstractWrappedOutputStream.java:51) ~[bundleFile:3.4.5]
at com.ctc.wstx.io.UTF8Writer.flush(UTF8Writer.java:100) ~[?:?]
at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:242) ~[?:?]
at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:260) ~[?:?]
at org.apache.cxf.jaxrs.interceptor.JAXRSDefaultFaultOutInterceptor.handleMessage(JAXRSDefaultFaultOutInterceptor.java:104) ~[bundleFile:3.4.5]
... 54 more