The MIDDLEWARE_INVOCATION_FAILED error occurs when there is an issue with the Routing Middleware being invoked on the CDN. This error can be caused by a variety of issues, including unhandled exceptions.
MIDDLEWARE_INVOCATION_FAILED:
Internal Server Error
I'm encountering an error and reviewing the docs at /flg~eyJhbGciOiJIUzI1NiJ9._v7-_v39.f3M12-KAPZCzcefUX_oPWq-I0u4iAhoJCQaxpxor_bI/docs/errors/MIDDLEWARE_INVOCATION_FAILED to understand what's happening.
Please help me resolve this by:
1. **Suggest the fix**: Analyze my codebase context and propose what needs to be changed to resolve this error
2. **Explain the root cause**: Break down why this error occurred:
- What was the code actually doing vs. what it needed to do?
- What conditions triggered this specific error?
- What misconception or oversight led to this?
3. **Teach the concept**: Help me understand the underlying principle:
- Why does this error exist and what is it protecting me from?
- What's the correct mental model for this concept?
- How does this fit into the broader framework/language design?
4. **Show warning signs**: Help me recognize this pattern in the future:
- What should I look out for that might cause this again?
- Are there similar mistakes I might make in related scenarios?
- What code smells or patterns indicate this issue?
5. **Discuss alternatives**: Explain if there are different valid approaches and their trade-offs
My goal is to fix the immediate issue while building lasting understanding so I can avoid and resolve similar errors independently in the future.
To troubleshoot this error, follow these steps:
- Check application logs: Review the application logs to identify any specific errors related to the Routing Middleware being invoked. They can be found at the host URL under the
/_logs path
- Use Vercel's status page: If you have tried the steps above and are still experiencing the error, check Vercel's status page for any reported outages in the CDN, which can sometimes cause this error
- Check function code: Ensure that the code for the Routing Middleware is correct and does not contain any errors or infinite loops