Since I am new to the CUBA Platform I was trying out the planner tutorial. I went through the process of creating a session and speaker. However when I want to start the CUBA Application it results in a Unable to build lambda consumer. Now my first assumption was I did something wrong in the tutorial but when I create a new empty project and start that it gives the same error.
Using Intellij 2020.2 and the CUBA Platform version: 7.2.8
11:17:34.901 INFO c.h.cuba.gui.config.WindowConfig - WindowConfig initialized in 105 ms
11:17:36.122 ERROR com.haulmont.cuba.web.AppUI - Unable to init ui
com.google.common.util.concurrent.UncheckedExecutionException: java.lang.RuntimeException: Unable to build lambda consumer MethodHandle(LoginScreen,AfterShowEvent)void
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2051) ~[guava-28.1-jre.jar:na]
at com.google.common.cache.LocalCache.get(LocalCache.java:3953) ~[guava-28.1-jre.jar:na]
at com.google.common.cache.LocalCache$LocalManualCache.get(LocalCache.java:4873) ~[guava-28.1-jre.jar:na]
at com.haulmont.cuba.gui.sys.UiControllerReflectionInspector.getConsumerMethodFactory(UiControllerReflectionInspector.java:180) ~[cuba-gui-7.2.8.jar:7.2.8]
at com.haulmont.cuba.gui.sys.UiControllerDependencyInjector.initSubscribeListeners(UiControllerDependencyInjector.java:372) ~[cuba-gui-7.2.8.jar:7.2.8]
at com.haulmont.cuba.gui.sys.UiControllerDependencyInjector.inject(UiControllerDependencyInjector.java:114) ~[cuba-gui-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.sys.WebScreens.createScreen(WebScreens.java:249) ~[cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.sys.WebScreens.create(WebScreens.java:178) ~[cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.gui.Screens.create(Screens.java:70) ~[cuba-gui-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.App.createTopLevelWindow(App.java:305) ~[cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.DefaultApp.initializeUi(DefaultApp.java:244) ~[cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.DefaultApp.connectionStateChanged(DefaultApp.java:112) ~[cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.DefaultApp$$Lambda$342/0000000000000000.accept(Unknown Source) ~[na:na]
at com.haulmont.bali.events.EventHub.publish(EventHub.java:170) ~[cuba-global-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.security.ConnectionImpl.fireStateChangeListeners(ConnectionImpl.java:228) ~[cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.security.ConnectionImpl.login(ConnectionImpl.java:106) ~[cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.DefaultApp.loginOnStart(DefaultApp.java:312) ~[cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.AppUI.setupUI(AppUI.java:534) ~[cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.AppUI.init(AppUI.java:358) ~[cuba-web-7.2.8.jar:7.2.8]
at com.vaadin.ui.UI.doInit(UI.java:738) [vaadin-server-8.9.2-15-cuba.jar:8.9.2-15-cuba]
at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:209) [vaadin-server-8.9.2-15-cuba.jar:8.9.2-15-cuba]
at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:67) [vaadin-server-8.9.2-15-cuba.jar:8.9.2-15-cuba]
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) [vaadin-server-8.9.2-15-cuba.jar:8.9.2-15-cuba]
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1578) [vaadin-server-8.9.2-15-cuba.jar:8.9.2-15-cuba]
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:425) [vaadin-server-8.9.2-15-cuba.jar:8.9.2-15-cuba]
at com.haulmont.cuba.web.sys.CubaApplicationServlet.serviceAppRequest(CubaApplicationServlet.java:329) [cuba-web-7.2.8.jar:7.2.8]
at com.haulmont.cuba.web.sys.CubaApplicationServlet.service(CubaApplicationServlet.java:215) [cuba-web-7.2.8.jar:7.2.8]
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:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.27]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-websocket.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.27]
at org.springframework.web.filter.CompositeFilter$VirtualFilterChain.doFilter(CompositeFilter.java:108) [spring-web-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at org.springframework.web.filter.CompositeFilter.doFilter(CompositeFilter.java:74) [spring-web-5.2.3.RELEASE.jar:5.2.3.RELEASE]
at com.haulmont.cuba.web.sys.CubaHttpFilter.doFilter(CubaHttpFilter.java:93) [cuba-web-7.2.8.jar:7.2.8]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [catalina.jar:9.0.27]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [catalina.jar:9.0.27]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) [catalina.jar:9.0.27]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [catalina.jar:9.0.27]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:526) [catalina.jar:9.0.27]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [catalina.jar:9.0.27]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [catalina.jar:9.0.27]
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678) [catalina.jar:9.0.27]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [catalina.jar:9.0.27]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [catalina.jar:9.0.27]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-coyote.jar:9.0.27]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-coyote.jar:9.0.27]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:861) [tomcat-coyote.jar:9.0.27]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1579) [tomcat-coyote.jar:9.0.27]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-coyote.jar:9.0.27]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_262]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_262]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:9.0.27]
at java.lang.Thread.run(Thread.java:823) [na:1.8.0_262]
Caused by: java.lang.RuntimeException: Unable to build lambda consumer MethodHandle(LoginScreen,AfterShowEvent)void
at com.haulmont.cuba.gui.sys.UiControllerReflectionInspector.lambda$getConsumerMethodFactory$1(UiControllerReflectionInspector.java:196) ~[cuba-gui-7.2.8.jar:7.2.8]
at com.haulmont.cuba.gui.sys.UiControllerReflectionInspector$$Lambda$416/0000000000000000.call(Unknown Source) ~[na:na]
at com.google.common.cache.LocalCache$LocalManualCache$1.load(LocalCache.java:4878) ~[guava-28.1-jre.jar:na]
at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3529) ~[guava-28.1-jre.jar:na]
at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2278) ~[guava-28.1-jre.jar:na]
at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2155) ~[guava-28.1-jre.jar:na]
at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2045) ~[guava-28.1-jre.jar:na]
… 54 common frames omitted
Caused by: java.lang.invoke.LambdaConversionException: Invalid caller: com.haulmont.cuba.web.app.login.LoginScreen
at java.lang.invoke.AbstractValidatingLambdaMetafactory.(AbstractValidatingLambdaMetafactory.java:118) ~[na:1.8.0_262]
at java.lang.invoke.InnerClassLambdaMetafactory.(InnerClassLambdaMetafactory.java:155) ~[na:1.8.0_262]
at java.lang.invoke.LambdaMetafactory.metafactory(LambdaMetafactory.java:299) ~[na:1.8.0_262]
at com.haulmont.cuba.gui.sys.UiControllerReflectionInspector.lambda$getConsumerMethodFactory$1(UiControllerReflectionInspector.java:193) ~[cuba-gui-7.2.8.jar:7.2.8]
… 60 common frames omitted