Unable to Sync Web GUI Plugin in Version 7.x

Unable to Sync Web GUI Plugin in Version 7.x

Info
Overview :

This knowledge base article explains the issue encountered while syncing the Web GUI plugin in AutomationEdge version 7.x and provides the steps to resolve it.

Warning
Issue Description :

While attempting to sync the Web GUI plugin in version 7.x, the synchronization fails with an error indicating that the plugin JAR file may be corrupted.

The issue is typically observed during plugin sync from Process Studio/Agent.

Affected Version

  • AutomationEdge 7.x

Alert
Error Logs

2025-12-22 09:53:45 main INFO ProcessStudioProperties:40 - Successfully initialized ProcessStudioProperties using process-studio.properties
2025-12-22 09:53:58 main ERROR BasePluginType:273 - Error while accessing JAR file web-gui-3.20-complete.jar: JAR might be corrupted
java.io.IOException: invalid constant type: 19 at 4
at javassist.bytecode.ConstPool.readOne(ConstPool.java:1241) ~[javassist-3.20.0-GA.jar:?]

Root Cause

The issue occurs due to an incompatible or corrupted javassist JAR file being used by Process Studio, which leads to failure while accessing the Web GUI plugin JAR

Idea
Resolution Steps :

Follow the steps below to resolve the issue:

  1. Take a backup of the existing javassist JAR file from the Process Studio/Agent lib directory.

  2. Copy the latest javassist JAR file from the Process Studio/Agent lib folder.

  3. Replace the existing JAR file with the latest version.

  4. Restart Process Studio.

  5. Sync the Web GUI plugin again.

Verification

After completing the above steps, verify that:

  • Process Studio starts without errors.

  • The Web GUI plugin sync completes successfully.

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