After upgrading to Wildfly 32 (from 31) we are seeing the following repeating error in the server log

0:41:18,391 WARN  [org.apache.activemq.artemis.core.client] (EJB default - 2) AMQ212037: Connection failure to invm:0 has been detected: null [code=GENERIC_EXCEPTION]
10:42:07,657 WARN  [org.apache.activemq.artemis.core.client] (EJB default - 2) AMQ212037: Connection failure to invm:0 has been detected: null [code=GENERIC_EXCEPTION]
10:43:07,655 WARN  [org.apache.activemq.artemis.core.client] (EJB default - 2) AMQ212037: Connection failure to invm:0 has been detected: null [code=GENERIC_EXCEPTION]
10:44:07,661 WARN  [org.apache.activemq.artemis.core.client] (EJB default - 2) AMQ212037: Connection failure to invm:0 has been detected: null [code=GENERIC_EXCEPTION]
10:45:07,662 WARN  [org.apache.activemq.artemis.core.client] (EJB default - 2) AMQ212037: Connection failure to invm:0 has been detected: null [code=GENERIC_EXCEPTION]
10:46:07,661 WARN  [org.apache.activemq.artemis.core.client] (EJB default - 2) AMQ212037: Connection failure to invm:0 has been detected: null [code=GENERIC_EXCEPTION]
10:47:07,664 WARN  [org.apache.activemq.artemis.core.client] (EJB default - 2) AMQ212037: Connection failure to invm:0 has been detected: null [code=GENERIC_EXCEPTION]
10:48:07,660 WARN  [org.apache.activemq.artemis.core.client] (EJB default - 2) AMQ212037: Connection failure to invm:0 has been detected: null [code=GENERIC_EXCEPTION]
10:49:07,655 WARN  [org.apache.activemq.artemis.core.client] (EJB default - 2) AMQ212037: Connection failure to invm:0 has been detected: null [code=GENERIC_EXCEPTION] 

This looks to be caused by [ARTEMIS-4691] AMQ212037 warning when closing any in-vm connection - ASF JIRA (apache.org)

So I guess a component upgrade to 2.33.0 would probably resolve it.