Automation for Jira fails with Branch rule / related issues Unexpected error executing rule

[Leo]

Hi Team,

After upgrading automation for jira plugin getting below error in rules

Branch rule / related issues

Unexpected error executing rule:java.lang.NoClassDefFoundError: com/codebarrel/automation/api/thirdparty/EventTriggerRuleComponent

what would be the cause for this any thoughts/ideas would be really appreciated 

Thanks in advance