Hi Martin/Matej, We hit the following problem with Jdk 8. Caused by: java.lang.BootstrapMethodError: java.lang.IllegalAccessException: 'org.jboss.weld.event.ObserverNotifier$ObserverExceptionHandler' no access to: 'org.jboss.weld.event.ObserverNotifier$ObserverExceptionHandler'     at org.jboss.weld.event.ObserverNotifier$ObserverExceptionHandler.<clinit>(ObserverNotifier.java:480)     at org.jboss.weld.event.ObserverNotifier.notify(ObserverNotifier.java:273)     at org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:177)     at org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:171)     at org.jboss.weld.bootstrap.events.AbstractContainerEvent.fire(AbstractContainerEvent.java:53)     at org.jboss.weld.bootstrap.events.AbstractDefinitionContainerEvent.fire(AbstractDefinitionContainerEvent.java:44)     at org.jboss.weld.bootstrap.events.BeforeBeanDiscoveryImpl.fire(BeforeBeanDiscoveryImpl.java:54)     at org.jboss.weld.bootstrap.WeldStartup.startInitialization(WeldStartup.java:391)     at org.jboss.weld.bootstrap.WeldBootstrap.startInitialization(WeldBootstrap.java:76)     at com.ibm.ws.cdi.impl.CDIContainerImpl$2.run(CDIContainerImpl.java:141)     at com.ibm.ws.cdi.impl.CDIContainerImpl$2.run(CDIContainerImpl.java:138)     at java.security.AccessController.doPrivileged(AccessController.java:594)     at com.ibm.ws.cdi.impl.CDIContainerImpl.applicationStarting(CDIContainerImpl.java:138)     at com.ibm.ws.cdi.liberty.CDIRuntimeImpl.applicationStarting(CDIRuntimeImpl.java:379)     at com.ibm.ws.container.service.state.internal.ApplicationStateManager.fireStarting(ApplicationStateManager.java:28)     at com.ibm.ws.container.service.state.internal.StateChangeServiceImpl.fireApplicationStarting(StateChangeServiceImpl.java:50)     at com.ibm.ws.app.manager.module.internal.DeployedAppInfoBase.preDeployApp(DeployedAppInfoBase.java:375)     ... 8 more Caused by: java.lang.IllegalAccessException: 'org.jboss.weld.event.ObserverNotifier$ObserverExceptionHandler' no access to: 'org.jboss.weld.event.ObserverNotifier$ObserverExceptionHandler'     at java.lang.invoke.MethodHandles$Lookup.checkClassAccess(MethodHandles.java:371)     at java.lang.invoke.MethodHandles$Lookup.checkAccess(MethodHandles.java:281)     at java.lang.invoke.MethodHandles$Lookup.checkAccess(MethodHandles.java:264)     at java.lang.invoke.MethodHandles$Lookup.findStatic(MethodHandles.java:468)     at java.lang.invoke.MethodHandle.sendResolveMethodHandle(MethodHandle.java:966)     at java.lang.invoke.MethodHandle.getCPMethodHandleAt(Native Method)     at java.lang.invoke.MethodHandle.resolveInvokeDynamic(MethodHandle.java:856)     ... 25 more java version "1.8.0_144" Java(TM) SE Runtime Environment (build 8.0.5.0 - pwi3280sr5-20170905_01(SR5)) IBM J9 VM (build 2.9, JRE 1.8.0 Windows 7 x86-32 20170901_363591 (JIT enabled, A OT enabled) J9VM - d56eb84 JIT  - tr.open_20170901_140853_d56eb84 OMR  - b033a01) JCL - 20170823_01 based on Oracle jdk8u144-b01 Do you know what is wrong here? Thanks Emily ================ Emily Jiang WebSphere Application Server, MicroProfile Development Lead Phone: 44-1962-816278 E-mail: emijiang(a)uk.ibm.com <mailto:emijiang@uk.ibm.com> Twitter: @emilyfhjiang IBM United Kingdom Limited Registered in England and Wales with number 741598 Registered office: PO Box 41, North Harbour, Portsmouth, Hants. PO6 3AU Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU _______________________________________________ weld-dev mailing list weld-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/weld-dev