Vaadin - unexpected message

[patrickengels1969]

We get the folllowing error, what can be wrong?

Unexpected message id from the client. Expected sync id: 66, got 67. more details logged on DEBUG level.
java.lang.UnsupportedOperationException: Unexpected message id from the client. Expected sync id: 66, got 67. more details logged on DEBUG level.
at com.vaadin.flow.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:310) ~[flow-server-23.3.15.jar:23.3.15]
at com.vaadin.flow.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:115) ~[flow-server-23.3.15.jar:23.3.15]
at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) ~[flow-server-23.3.15.jar:23.3.15]
at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1560) ~[flow-server-23.3.15.jar:23.3.15]
at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:369) ~[flow-server-23.3.15.jar:23.3.15]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[servlet-api.jar:?]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[catalina.jar:8.5.78]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[catalina.jar:8.5.78]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-websocket.jar:8.5.78]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[catalina.jar:8.5.78]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[catalina.jar:8.5.78]
at org.apache.logging.log4j.web.Log4jServletFilter.doFilter(Log4jServletFilter.java:71) ~[log4j-web-2.18.0.jar:2.18.0]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[catalina.jar:8.5.78]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[catalina.jar:8.5.78]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[catalina.jar:8.5.78]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[catalina.jar:8.5.78]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:543) ~[catalina.jar:8.5.78]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[catalina.jar:8.5.78]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[catalina.jar:8.5.78]
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:769) ~[catalina.jar:8.5.78]
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:698) ~[catalina.jar:8.5.78]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[catalina.jar:8.5.78]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:367) ~[catalina.jar:8.5.78]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:639) ~[tomcat-coyote.jar:8.5.78]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-coyote.jar:8.5.78]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:882) ~[tomcat-coyote.jar:8.5.78]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1647) ~[tomcat-coyote.jar:8.5.78]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-coyote.jar:8.5.78]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-util.jar:8.5.78]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-util.jar:8.5.78]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-util.jar:8.5.78]
at java.lang.Thread.run(Thread.java:833) ~[?:?]

[samie]

Hi! Might be internal that you can ignore. Is the application still working? Are you using some add-on here?

[patrickengels1969]

Hi thanks for the quick response.
so can I ignore the message. It occurred 2-3 times in 2 months.
Yes we do use some add-ons.