Your question is Debugging Production Issues. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
How do you approach debugging complex issues in a production environment?
Please answer with a specific past example. Explain how you established scope, protected users and system stability, gathered evidence, prioritized hypotheses, communicated with stakeholders, and followed through after mitigation. The interviewer is looking for a structured process, sound judgment under pressure, ownership, and learning rather than an exhaustive list of debugging tools.