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Support Article

Pega agent displays Java.lang.NoClassDefFoundError exception



Upon deployment, when the advanced agent activity runs, the agent stops with a NoClassDefFoundError.

Error Messages

java.lang.NoClassDefFoundErrorcom/pega/pegarules/generation/internal/assembly/FUAPagesAndClassesHelper$NormalizedReferenceForPandC at
Exception: java.lang.NoClassDefFoundError:com/pega/pegarules/generation/internal/assembly/FUAPagesAndClassesHelper$NormalizedReferenceForPandC at

Steps to Reproduce


Root Cause

The class was built incorrectly.


As a local-change, restart with a clear cache.

Published August 17, 2019 - Updated October 8, 2020

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