2020-06-03 11:03:23,017 WARN  [org.jboss.jca.core.connectionmanager.pool.strategy.OnePool] (External Management Request Threads -- 1) IJ000604: Throwable while attempting to get a new connection: null: javax.resource.ResourceException: IJ031084: Unable to create connection
	at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:345)
	at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:352)
	at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:287)
	at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.createConnectionEventListener(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:1326)
	at org.jboss.jca.core.connectionmanager.pool.mcp.SemaphoreConcurrentLinkedDequeManagedConnectionPool.getConnection(SemaphoreConcurrentLinkedDequeManagedConnectionPool.java:499)
	at org.jboss.jca.core.connectionmanager.pool.AbstractPool.internalTestConnection(AbstractPool.java:1067)
	at org.jboss.jca.core.connectionmanager.pool.strategy.OnePool.testConnection(OnePool.java:93)
	at org.jboss.as.connector.subsystems.common.pool.PoolOperations$TestConnectionInPool.invokeCommandOn(PoolOperations.java:240)
	at org.jboss.as.connector.subsystems.common.pool.PoolOperations$1.execute(PoolOperations.java:97)
	at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:999)
	at org.jboss.as.controller.AbstractOperationContext.processStages(AbstractOperationContext.java:743)
	at org.jboss.as.controller.AbstractOperationContext.executeOperation(AbstractOperationContext.java:467)
	at org.jboss.as.controller.OperationContextImpl.executeOperation(OperationContextImpl.java:1413)
	at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:429)
	at org.jboss.as.controller.ModelControllerImpl.lambda$execute$1(ModelControllerImpl.java:246)
	at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:289)
	at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:255)
	at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:246)
	at org.jboss.as.domain.http.server.DomainApiHandler.handleRequest(DomainApiHandler.java:212)
	at io.undertow.server.handlers.encoding.EncodingHandler.handleRequest(EncodingHandler.java:72)
	at org.jboss.as.domain.http.server.DomainApiCheckHandler.handleRequest(DomainApiCheckHandler.java:93)
	at org.jboss.as.domain.http.server.security.ElytronIdentityHandler.lambda$handleRequest$0(ElytronIdentityHandler.java:62)
	at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:313)
	at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:270)
	at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:254)
	at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:225)
	at org.jboss.as.domain.http.server.security.ElytronIdentityHandler.handleRequest(ElytronIdentityHandler.java:61)
	at io.undertow.server.handlers.BlockingHandler.handleRequest(BlockingHandler.java:56)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:376)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
	at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
	at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
	at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
	at java.lang.Thread.run(Thread.java:748)
	at org.jboss.threads.JBossThread.run(JBossThread.java:485)
Caused by: javax.resource.ResourceException: IJ031087: Failed to register DriverClass for: com.mysql.cj.jdbc.Driver
	at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getDriver(LocalManagedConnectionFactory.java:604)
	at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.createLocalManagedConnection(LocalManagedConnectionFactory.java:320)
	... 35 more
Caused by: java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver from [Module "deployment.mysql-connector-java-5.1.49-bin.jar" from Service Module Loader]
	at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:255)
	at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:410)
	at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
	at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:348)
	at org.jboss.jca.adapters.jdbc.local.LocalManagedConnectionFactory.getDriver(LocalManagedConnectionFactory.java:595)
	... 36 more

2020-06-03 11:03:23,019 ERROR [org.jboss.as.controller.management-operation] (External Management Request Threads -- 1) WFLYCTL0013: Operation ("test-connection-in-pool") failed - address: ([
    ("subsystem" => "datasources"),
    ("data-source" => "MySqlDS")
]) - failure description: "WFLYJCA0040: failed to invoke operation: WFLYJCA0047: Connection is not valid"