Hi ,I am starting keycloak where i have about 400 realms and the startup was timing out, after i tweaked the wildfly   server setting , i get the following error ,and the application fails to start. Help will be appriciated., why is  getUsersCount throwoing null pointer? Caused by: java.lang.NullPointerException        at org.keycloak.models.jpa.JpaUserProvider.getUsersCount(JpaUserProvider.java:598)        at org.keycloak.storage.UserStorageManager.getUsersCount(UserStorageManager.java:451)        at org.keycloak.storage.UserStorageManager.getUsersCount(UserStorageManager.java:460)        at org.keycloak.services.managers.ApplianceBootstrap.isNoMasterUser(ApplianceBootstrap.java:55) :07:24,279 INFO  [org.hibernate.dialect.Dialect] (ServerService Thread Pool -- 62) HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect09:07:24,323 INFO  [org.hibernate.envers.boot.internal.EnversServiceImpl] (ServerService Thread Pool -- 62) Envers integration enabled? : true09:07:24,893 INFO  [org.hibernate.validator.internal.util.Version] (ServerService Thread Pool -- 62) HV000001: Hibernate Validator 5.3.6.Final09:07:25,718 INFO  [org.hibernate.hql.internal.QueryTranslatorFactoryInitiator] (ServerService Thread Pool -- 62) HHH000397: Using ASTQueryTranslatorFactory09:13:12,576 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 62) MSC000001: Failed to start service jboss.undertow.deployment.default-server.default-host./auth: org.jboss.msc.service.StartException in service jboss.undertow.deployment.default-server.default-host./auth: java.lang.RuntimeException: RESTEASY003325: Failed to construct public org.keycloak.services.resources.KeycloakApplication(javax.servlet.ServletContext,org.jboss.resteasy.core.Dispatcher)        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:81)        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)        at java.util.concurrent.FutureTask.run(FutureTask.java:266)        at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)        at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)        at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1378)        at java.lang.Thread.run(Thread.java:748)        at org.jboss.threads.JBossThread.run(JBossThread.java:485)Caused by: java.lang.RuntimeException: RESTEASY003325: Failed to construct public org.keycloak.services.resources.KeycloakApplication(javax.servlet.ServletContext,org.jboss.resteasy.core.Dispatcher)        at org.jboss.resteasy.core.ConstructorInjectorImpl.construct(ConstructorInjectorImpl.java:162)        at org.jboss.resteasy.spi.ResteasyProviderFactory.createProviderInstance(ResteasyProviderFactory.java:2676)        at org.jboss.resteasy.spi.ResteasyDeployment.createApplication(ResteasyDeployment.java:361)        at org.jboss.resteasy.spi.ResteasyDeployment.startInternal(ResteasyDeployment.java:274)        at org.jboss.resteasy.spi.ResteasyDeployment.start(ResteasyDeployment.java:86)        at org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.init(ServletContainerDispatcher.java:119)        at org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.init(HttpServletDispatcher.java:36)        at io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:117)        at org.wildfly.extension.undertow.security.RunAsLifecycleInterceptor.init(RunAsLifecycleInterceptor.java:78)        at io.undertow.servlet.core.LifecyleInterceptorInvocation.proceed(LifecyleInterceptorInvocation.java:103)        at io.undertow.servlet.core.ManagedServlet$DefaultInstanceStrategy.start(ManagedServlet.java:300)        at io.undertow.servlet.core.ManagedServlet.createServlet(ManagedServlet.java:140)        at io.undertow.servlet.core.DeploymentManagerImpl$2.call(DeploymentManagerImpl.java:584)        at io.undertow.servlet.core.DeploymentManagerImpl$2.call(DeploymentManagerImpl.java:555)        at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)        at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)        at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1514)        at io.undertow.servlet.core.DeploymentManagerImpl.start(DeploymentManagerImpl.java:597)        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:97)        at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)        ... 8 moreCaused by: java.lang.NullPointerException        at org.keycloak.models.jpa.JpaUserProvider.getUsersCount(JpaUserProvider.java:598)        at org.keycloak.storage.UserStorageManager.getUsersCount(UserStorageManager.java:451)        at org.keycloak.storage.UserStorageManager.getUsersCount(UserStorageManager.java:460)        at org.keycloak.services.managers.ApplianceBootstrap.isNoMasterUser(ApplianceBootstrap.java:55)        at org.keycloak.services.resources.KeycloakApplication$2.run(KeycloakApplication.java:163)        at org.keycloak.models.utils.KeycloakModelUtils.runJobInTransaction(KeycloakModelUtils.java:227)        at org.keycloak.services.resources.KeycloakApplication.<init>(KeycloakApplication.java:159)        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)        at org.jboss.resteasy.core.ConstructorInjectorImpl.construct(ConstructorInjectorImpl.java:150)        ... 31 more 09:13:12,581 INFO  [org.jboss.as.server] (Thread-2) WFLYSRV0220: Server shutdown has been requested via an OS signal09:13:12,654 INFO  [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-3) ISPN000080: Disconnecting JGroups channel ee09:13:12,662 INFO  [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thread 1-1) ISPN000080: Disconnecting JGroups channel ee09:13:12,663 INFO  [org.infinispan.remoting.transport.jgroups.JGroupsTransport] (MSC service thre