ERROR message in the RHPAM server.log file: "Container 'containerName' is not instantiated or cannot find container for alias 'aliasName'

Issue

• Containers are up and running successfully without any issue but the following error is logged for every container in the server.log file during the startup:

  2020-09-28 18:50:46,162 ERROR [org.kie.server.services.drools.DroolsKieContainerCommandServiceImpl] (default task-2) Error calling container 'containerName': 
  java.lang.IllegalArgumentException: Container 'containerName' is not instantiated or cannot find container for alias 'aliasName'
      at org.kie.server.services.impl.KieServerRegistryImpl.getContainer(KieServerRegistryImpl.java:92)
      at org.kie.server.services.drools.DroolsKieContainerCommandServiceImpl.callContainer(DroolsKieContainerCommandServiceImpl.java:51)
      at org.kie.server.remote.rest.drools.CommandResource.manageContainer(CommandResource.java:91)