After I updated to vaadin 7.6.x i have this exception. Please somebody help me understand what more do I need to show to understand this problem. Thanks!
22:37:25,788 ERROR [stderr]
(default task-5) java.lang.IllegalArgumentException: literal value cannot be null
22:37:25,789 ERROR [stderr]
(default task-5) at org.hibernate.jpa.criteria.CriteriaBuilderImpl.literal(CriteriaBuilderImpl.java:612)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.addon.jpacontainer.util.HibernateLazyLoadingDelegate.lazilyLoadPropertyValue(HibernateLazyLoadingDelegate.java:78)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.addon.jpacontainer.util.HibernateLazyLoadingDelegate.ensureLazyPropertyLoaded(HibernateLazyLoadingDelegate.java:58)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.addon.jpacontainer.util.HibernateLazyLoadingDelegate.recurseIfNested(HibernateLazyLoadingDelegate.java:103)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.addon.jpacontainer.util.HibernateLazyLoadingDelegate.ensureLazyPropertyLoaded(HibernateLazyLoadingDelegate.java:59)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.addon.jpacontainer.JPAContainerItem$ItemProperty.ensurePropertyLoaded(JPAContainerItem.java:256)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.addon.jpacontainer.JPAContainerItem$ItemProperty.getRealValue(JPAContainerItem.java:175)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.addon.jpacontainer.JPAContainerItem$ItemProperty.getValue(JPAContainerItem.java:163)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.ui.Grid$RowDataGenerator.writeData(Grid.java:2192)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.ui.Grid$RowDataGenerator.generateData(Grid.java:2152)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.server.communication.data.RpcDataProviderExtension.getRowData(RpcDataProviderExtension.java:395)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.server.communication.data.RpcDataProviderExtension.internalUpdateRows(RpcDataProviderExtension.java:521)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.server.communication.data.RpcDataProviderExtension.beforeClientResponse(RpcDataProviderExtension.java:347)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.server.communication.UidlWriter.write(UidlWriter.java:112)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.server.communication.UidlRequestHandler.writeUidl(UidlRequestHandler.java:113)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:81)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41)
22:37:25,789 ERROR [stderr]
(default task-5) at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1409)
22:37:25,790 ERROR [stderr]
(default task-5) at com.vaadin.cdi.server.VaadinCDIServletService.handleRequest(VaadinCDIServletService.java:92)
22:37:25,790 ERROR [stderr]
(default task-5) at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:364)
22:37:25,790 ERROR [stderr]
(default task-5) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:130)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.websockets.jsr.JsrWebSocketFilter.doFilter(JsrWebSocketFilter.java:129)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132)
22:37:25,790 ERROR [stderr]
(default task-5) at io.ingenia.gambling.web.servlet.MyFilter.doFilter(MyFilter.java:32)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:60)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
22:37:25,790 ERROR [stderr]
(default task-5) at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:56)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:63)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:70)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:76)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
22:37:25,790 ERROR [stderr]
(default task-5) at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
22:37:25,790 ERROR [stderr]
(default task-5) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
22:37:25,791 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:261)
22:37:25,791 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:247)
22:37:25,791 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:76)
22:37:25,791 ERROR [stderr]
(default task-5) at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:166)
22:37:25,791 ERROR [stderr]
(default task-5) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:197)
22:37:25,791 ERROR [stderr]
(default task-5) at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:759)
22:37:25,791 ERROR [stderr]
(default task-5) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
22:37:25,791 ERROR [stderr]
(default task-5) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
22:37:25,791 ERROR [stderr]
(default task-5) at java.lang.Thread.run(Thread.java:745)