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DRAFT KB-XXXX "Unable to decode KResponse" error while upgrading from Appian 18.2 to 18.3

Symptoms

During the start up process analytics engines are either in replaying or down state. The <APPIAN_HOME>/logs/service_manager.logs has following error: 

Unable to decoding KResponse

Cause

The error is caused because of out of sync engine data between execution and analytics engines. 

Action

Run the resetAnalystics script following the instruction here.