2019-02-22 15:57:50.071 [main]             InMemoryMucRepository.getDefaultRoomConfig()  FINEST: Error reading default room configuration
tigase.db.UserNotFoundException: User does not exist: multi-user-chat
        at tigase.db.jdbc.JDBCRepository.getUserUID(JDBCRepository.java:1174)
        at tigase.db.jdbc.JDBCRepository.getNodeNID(JDBCRepository.java:1103)
        at tigase.db.jdbc.JDBCRepository.getKeys(JDBCRepository.java:236)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at tigase.stats.StatisticsInvocationHandler.invoke(StatisticsInvocationHandler.java:75)
        at com.sun.proxy.$Proxy33.getKeys(Unknown Source)
        at tigase.db.UserRepositoryMDImpl.getKeys(UserRepositoryMDImpl.java:139)
        at tigase.muc.RoomConfig.read(RoomConfig.java:429)
        at tigase.muc.repository.inmemory.InMemoryMucRepository.getDefaultRoomConfig(InMemoryMucRepository.java:177)
        at tigase.muc.repository.inmemory.InMemoryMucRepository.initialize(InMemoryMucRepository.java:273)
        at tigase.kernel.core.Kernel.initBean(Kernel.java:136)
        at tigase.kernel.core.Kernel.injectDependencies(Kernel.java:1267)
        at tigase.kernel.core.Kernel.initBean(Kernel.java:131)
        at tigase.kernel.core.Kernel.injectDependencies(Kernel.java:1267)
        at tigase.kernel.core.Kernel.initBean(Kernel.java:131)
        at tigase.kernel.core.Kernel.injectDependencies(Kernel.java:1267)
        at tigase.kernel.core.Kernel.injectDependency(Kernel.java:875)
        at tigase.kernel.core.Kernel$DelayedDependenciesInjection.inject(Kernel.java:1547)
        at tigase.kernel.core.Kernel.finishDependecyDelayedInjection(Kernel.java:573)
        at tigase.kernel.core.Kernel.initBean(Kernel.java:128)
        at tigase.kernel.core.Kernel.injectDependencies(Kernel.java:1267)
        at tigase.kernel.core.Kernel.injectIfRequired(Kernel.java:1042)
        at tigase.kernel.core.Kernel.getInstance(Kernel.java:308)
        at tigase.server.Bootstrap.start(Bootstrap.java:326)
        at tigase.server.XMPPServer.start(XMPPServer.java:188)
        at tigase.server.XMPPServer.main(XMPPServer.java:142)