If I am the developer of the RPC service, what are my immediate actions upon receiving this error report?

As the RPC service developer, your immediate actions should involve examining the server-side application logs for detailed error messages, stack traces, and the exact request payload that caused the failure. Debug the code path handling the specific RPC method that failed. Verify database connections, third-party API calls, and any file system operations involved. Check for unhandled exceptions, race conditions, or incorrect data types leading to crashes. Replicate the issue in a development environment if possible to step through the code.