Error handling model response: Headers is not a constructor

Before submitting your bug report

• I've tried using the "Ask AI" feature on the Continue docs site to see if the docs have an answer
• I'm not able to find a related conversation on GitHub discussions that reports the same bug
• I'm not able to find an open issue that reports the same bug
• I've seen the troubleshooting guide on the Continue Docs

Relevant environment info

- OS:
- Continue version:
- IDE version:
- Model:
- config:
  
name: Local Config
version: 1.0.0
schema: v1
models:
  - name: DeepSeek Chat
    provider: deepseek
    model: deepseek-chat
    apiKey: <-->
  - name: Gemini 3.1 Pro
    provider: gemini
    model: gemini-3.1-pro-preview
    apiKey: <-->

  
  OR link to agent in Continue hub:

Description

Error handling model respons

e
There was an error handling the response from Gemini 3.1 Pro.

Please try to submit your message again.

Resubmit last message
View error output
Headers is not a constructor

To reproduce

Log output

The report names no source file, test, or entry point. Start by reproducing the Gemini 3.1 Pro request and inspect the error output behind “View error output,” then trace the model-response handling that reaches “Headers is not a constructor.” Done means the response is handled successfully without this error and the relevant regression is covered.