MIDDLEWARE_INVOCATION_FAILED

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.

500

MIDDLEWARE_INVOCATION_FAILED

Internal Server Error

Troubleshoot

To troubleshoot this error, follow these steps:

  1. 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
  2. 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
  3. Check function code: Ensure that the code for the Routing Middleware is correct and does not contain any errors or infinite loops

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