Issue 1:

I was using a modeler to design process for a time, and there were a lot of issues that happened during development, sometimes it was fixed after turning off and running the server and the last time I tried to create a form, after that all things that I click on designer says Error an has occurred while trying to lock this asset. After that even removing the form or deleting the project, or adding a new project didn't solve it. 

Issue 2:

Another issue as well, while adding a new class as data from external it needs to re-run the server to recognize it. 

Issue 3:

Another issue that I encountered was some tasks like GoogleMailSender even after adding all the things reflector was not able to recognize the class, ClassNoDefFound error occurred which led to preventing deploying the application in case of using it.

Attached is a detailed log for the main issue which is 1. 

Exception of issue 1:

12:37:00,858 INFO  [org.uberfire.ext.metadata.io.IndexerDispatcher] (Thread-173) Completed indexing 0 events for indexer [id=org.drools.workbench.screens.guided.rule.backend.server.indexing.GuidedRuleDrlFileIndexer] in cluster [KClusterImpl [clusterId=MySpace/test/master]].
12:37:00,947 INFO  [org.uberfire.ext.metadata.io.IndexerDispatcher] (Thread-171) Completed indexing 1 events for indexer [id=org.uberfire.ext.metadata.io.CoreIndexer] in cluster [KClusterImpl [clusterId=MySpace/test/master]].
12:37:00,977 INFO  [org.uberfire.ext.metadata.io.IOServiceIndexedImpl] (Thread-171) Completed indexing 1 events in cluster [KClusterImpl [clusterId=MySpace/test/master]].
12:37:09,417 ERROR [stderr] (default task-16) org.eclipse.jgit.api.errors.ConcurrentRefUpdateException: Could not lock HEAD. RefUpdate return code was: LOCK_FAILURE
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.java.nio.fs.jgit.util.commands.SimpleRefUpdateCommand.forceUpdate(SimpleRefUpdateCommand.java:72)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.java.nio.fs.jgit.util.commands.SimpleRefUpdateCommand.execute(SimpleRefUpdateCommand.java:56)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.java.nio.fs.jgit.util.GitImpl.refUpdate(GitImpl.java:556)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.java.nio.fs.jgit.util.commands.Commit.execute(Commit.java:158)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.java.nio.fs.jgit.util.GitImpl.commit(GitImpl.java:433)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.java.nio.fs.jgit.JGitFileSystemProvider.commit(JGitFileSystemProvider.java:2401)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.java.nio.fs.jgit.JGitFileSystemProvider.access$300(JGitFileSystemProvider.java:181)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.java.nio.fs.jgit.JGitFileSystemProvider$5.close(JGitFileSystemProvider.java:1164)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.io.impl.AbstractIOService.write(AbstractIOService.java:683)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.io.impl.AbstractIOService.write(AbstractIOService.java:544)
12:37:09,417 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.io.impl.AbstractIOService.write(AbstractIOService.java:554)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.backend.server.VFSLockServiceImpl.acquireLock(VFSLockServiceImpl.java:88)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.backend.server.VFSLockServiceImpl$Proxy$_$$_WeldClientProxy.acquireLock(Unknown Source)
12:37:09,418 ERROR [stderr] (default task-16)     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
12:37:09,418 ERROR [stderr] (default task-16)     at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
12:37:09,418 ERROR [stderr] (default task-16)     at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
12:37:09,418 ERROR [stderr] (default task-16)     at java.base/java.lang.reflect.Method.invoke(Method.java:566)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.bus.server.io.AbstractRPCMethodCallback.invokeMethodFromMessage(AbstractRPCMethodCallback.java:65)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.bus.server.io.ValueReplyRPCEndpointCallback.callback(ValueReplyRPCEndpointCallback.java:40)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.bus.server.io.RemoteServiceCallback.callback(RemoteServiceCallback.java:54)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.cdi.server.CDIExtensionPoints$2.callback(CDIExtensionPoints.java:448)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.bus.server.DeliveryPlan.deliver(DeliveryPlan.java:47)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.bus.server.ServerMessageBusImpl.sendGlobal(ServerMessageBusImpl.java:297)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.bus.server.SimpleDispatcher.dispatchGlobal(SimpleDispatcher.java:46)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:96)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.bus.server.service.ErraiServiceImpl.store(ErraiServiceImpl.java:113)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.jboss.errai.bus.server.servlet.DefaultBlockingServlet.doPost(DefaultBlockingServlet.java:144)
12:37:09,418 ERROR [stderr] (default task-16)     at javax.servlet.api@2.0.0.Final//javax.servlet.http.HttpServlet.service(HttpServlet.java:523)
12:37:09,418 ERROR [stderr] (default task-16)     at javax.servlet.api@2.0.0.Final//javax.servlet.http.HttpServlet.service(HttpServlet.java:590)
12:37:09,418 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
12:37:09,418 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:129)
12:37:09,418 ERROR [stderr] (default task-16)     at io.undertow.websocket@2.2.5.Final//io.undertow.websockets.jsr.JsrWebSocketFilter.doFilter(JsrWebSocketFilter.java:173)
12:37:09,418 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
12:37:09,418 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
12:37:09,418 ERROR [stderr] (default task-16)     at io.opentracing.contrib.opentracing-jaxrs2//io.opentracing.contrib.jaxrs2.server.SpanFinishingFilter.doFilter(SpanFinishingFilter.java:52)
12:37:09,418 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
12:37:09,418 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
12:37:09,418 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.ext.security.server.SecureHeadersFilter.doFilter(SecureHeadersFilter.java:110)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
12:37:09,419 ERROR [stderr] (default task-16)     at deployment.business-central.war//org.uberfire.ext.security.server.SecurityIntegrationFilter.doFilter(SecurityIntegrationFilter.java:70)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
12:37:09,419 ERROR [stderr] (default task-16)     at org.wildfly.security.elytron-web.undertow-server@1.9.0.Final//org.wildfly.elytron.web.undertow.server.ElytronRunAsHandler.lambda$handleRequest$1(ElytronRunAsHandler.java:68)
12:37:09,419 ERROR [stderr] (default task-16)     at org.wildfly.security.elytron-private@1.15.1.Final//org.wildfly.security.auth.server.FlexibleIdentityAssociation.runAsFunctionEx(FlexibleIdentityAssociation.java:103)
12:37:09,419 ERROR [stderr] (default task-16)     at org.wildfly.security.elytron-private@1.15.1.Final//org.wildfly.security.auth.server.Scoped.runAsFunctionEx(Scoped.java:161)
12:37:09,419 ERROR [stderr] (default task-16)     at org.wildfly.security.elytron-private@1.15.1.Final//org.wildfly.security.auth.server.Scoped.runAs(Scoped.java:73)
12:37:09,419 ERROR [stderr] (default task-16)     at org.wildfly.security.elytron-web.undertow-server@1.9.0.Final//org.wildfly.elytron.web.undertow.server.ElytronRunAsHandler.handleRequest(ElytronRunAsHandler.java:67)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.server.handlers.DisableCacheHandler.handleRequest(DisableCacheHandler.java:33)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:53)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:59)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
12:37:09,419 ERROR [stderr] (default task-16)     at org.wildfly.security.elytron-web.undertow-server-servlet@1.9.0.Final//org.wildfly.elytron.web.undertow.server.servlet.CleanUpHandler.handleRequest(CleanUpHandler.java:38)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
12:37:09,419 ERROR [stderr] (default task-16)     at org.wildfly.extension.undertow@23.0.0.Final//org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
12:37:09,419 ERROR [stderr] (default task-16)     at org.wildfly.extension.undertow@23.0.0.Final//org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:269)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:78)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:133)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:130)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
12:37:09,419 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
12:37:09,420 ERROR [stderr] (default task-16)     at org.wildfly.extension.undertow@23.0.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1530)
12:37:09,420 ERROR [stderr] (default task-16)     at org.wildfly.extension.undertow@23.0.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1530)
12:37:09,420 ERROR [stderr] (default task-16)     at org.wildfly.extension.undertow@23.0.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1530)
12:37:09,420 ERROR [stderr] (default task-16)     at org.wildfly.extension.undertow@23.0.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1530)
12:37:09,420 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:249)
12:37:09,420 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:78)
12:37:09,420 ERROR [stderr] (default task-16)     at io.undertow.servlet@2.2.5.Final//io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:99)
12:37:09,420 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.server.Connectors.executeRootHandler(Connectors.java:387)
12:37:09,420 ERROR [stderr] (default task-16)     at io.undertow.core@2.2.5.Final//io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:841)
12:37:09,420 ERROR [stderr] (default task-16)     at org.jboss.threads@2.4.0.Final//org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
12:37:09,420 ERROR [stderr] (default task-16)     at org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1990)
12:37:09,420 ERROR [stderr] (default task-16)     at org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
12:37:09,420 ERROR [stderr] (default task-16)     at org.jboss.threads@2.4.0.Final//org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
12:37:09,420 ERROR [stderr] (default task-16)     at org.jboss.xnio@3.8.4.Final//org.xnio.XnioWorker$WorkerThreadFactory$1$1.run(XnioWorker.java:1280)
12:37:09,420 ERROR [stderr] (default task-16)     at java.base/java.lang.Thread.run(Thread.java:834)
12:37:09,731 INFO  [stdout] (default task-16) Something