Hi,
A developer (chinese forum) reported that his application will crash in some case, but we can’t found out the cause.
Following is the stack information when app crashed,hopes this information is help to address the problem.If need more information ,tell me please.
16:47:22.627 ERROR com.haulmont.cuba.web.log.AppLog - Exception:
java.lang.NullPointerException: null
at com.haulmont.cuba.web.widgets.CubaImage.attach(CubaImage.java:40) ~[cuba-web-widgets-7.0.7.jar:na]
at com.vaadin.server.AbstractClientConnector.attach(AbstractClientConnector.java:643) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.ui.AbstractComponent.attach(AbstractComponent.java:670) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.server.AbstractClientConnector.attach(AbstractClientConnector.java:643) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.ui.AbstractComponent.attach(AbstractComponent.java:670) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.server.AbstractClientConnector.attach(AbstractClientConnector.java:643) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.ui.AbstractComponent.attach(AbstractComponent.java:670) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.ui.UI.attach(UI.java:1364) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.ui.UI.setSession(UI.java:499) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:189) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:67) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1577) ~[vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:425) [vaadin-server-8.6.4-13-cuba.jar:8.6.4-13-cuba]
at com.haulmont.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:329) [cuba-web-7.0.7.jar:7.0.7]
at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:215) [cuba-web-7.0.7.jar:7.0.7]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [servlet-api.jar:na]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [catalina.jar:9.0.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.14]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-websocket.jar:9.0.14]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.14]
at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:73) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at com.haulmont.cuba.web.sys.CubaHttpFilter.doFilter(CubaHttpFilter.java:108) [cuba-web-7.0.7.jar:7.0.7]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.14]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.14]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199) [catalina.jar:9.0.14]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [catalina.jar:9.0.14]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [catalina.jar:9.0.14]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [catalina.jar:9.0.14]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [catalina.jar:9.0.14]
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668) [catalina.jar:9.0.14]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [catalina.jar:9.0.14]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [catalina.jar:9.0.14]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-coyote.jar:9.0.14]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-coyote.jar:9.0.14]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834) [tomcat-coyote.jar:9.0.14]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417) [tomcat-coyote.jar:9.0.14]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:9.0.14]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_45]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_45]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:9.0.14]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_45]
Environment:
Platform 7.0.7
Running in Studio
OS: Win10 64bit
Browser: chrome:75.0.3770.100