You receive 500 when trying to get order information. What do you do to find out the reason?

When receiving an HTTP error 500 (Internal Server Error) for an order information request, the following steps should be taken for diagnostics:

1. Check server logs — find details of the error, call stack, exceptions.
2. Repeat the request with additional information — for example, include headers, parameters to ensure the request is correct.
3. Verify the correctness of request data — possibly incorrect or missing parameters are being sent.
4. Use debugging tools — such as Postman or curl with detailed output.
5. Check server and dependency status — database, external services that might cause the failure.
6. Perform request tracing — if distributed tracing is available, review the request path.

If you have access to the server code, consider adding additional logging or error handling to more precisely identify the cause of the failure.