Build Agent showing "Internal server error sending messages" for every prompt

YuvrajZ
Tera Contributor

Saturday

Hi everyone,

I'm using ServiceNow IDE with Build Agent (Claude 4 Sonnet).

The Build Agent panel loads successfully, but every prompt I send immediately returns:

"Error: Internal server error sending messages"

This happens even with very simple prompts such as:
- Hello
- Create a Student table
- Help me brainstorm app ideas

The error occurs instantly before any response is generated.

What I've already tried:
- Refreshing the browser
- Starting a new Build Agent chat
- Logging out and back in
- Using very small prompts
- Testing inside both Global scope and a scoped application

Environment:
- Latest ServiceNow release
- Personal Developer Instance
- ServiceNow IDE
- Build Agent with Claude 4 Sonnet

Has anyone encountered this issue before?

Are there any required plugins, roles, entitlements, properties, or instance configurations that should be checked?

Any troubleshooting steps would be appreciated.

Thanks.
Screenshot 2026-06-13 225746.png

 

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1 REPLY 1

Dr Atul G- LNG
Tera Patron

an hour ago

Try repair the plugin once (Build Agent trial)

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Dr. Atul G. - Learn N Grow Together
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