KB-1907 "Failed to register catchup" and "Could not publish rules" errors seen in application server log when attempting to use a custom component plugin


Attempting to use a custom component plugin results in the following error in the application server log:

YYYY-MM-DD HH-MM-SS [Appian Work Item - <WORK_ITEM_NUMBER> - <ENGINE_NAME> : CatchupRequest] 
ERROR com.appiancorp.process.engine.CatchupRequest - Failed to register catchup (2), can retry java.lang.NullPointerException
YYYY-MM-DD HH-MM-SS [Appian Work Item - <WORK_ITEM_NUMBER> - <ENGINE_NAME> : PublishRuleRequest]
ERROR com.appiancorp.process.engine.PublishRuleRequest - Could not publish rules java.lang.NullPointerException

The errors will also be seen in the respective engine logs<APPIAN_HOME>/logs/db_*.log.


This issue has been addressed via AN-127095 in Appian 19.1 Hotfix Package A.


Apply the latest hotfix to your Appian installation or upgrade to the latest version of Appian.

Affected Versions

This article applies to Appian 19.1.

Last Reviewed: April 2019