AI Expert for RAG Pipeline Fix

We need an AI expert to diagnose and fix a RAG pipeline issue in our application. The problem involves a mismatch between the expected and actual output format, causing the system to return an empty response. You will review the current setup, identify the root cause, and implement a reliable fix. The ideal freelancer should be able to work independently, communicate clearly, and deliver a stable solution quickly. Please share relevant experience with similar AI pipeline issues and your approach to troubleshooting and resolving them.