My live-streaming site suddenly lost its core feature: the live feed no longer loads. Users click play and the spinner just sits there; recorded content is fine, so the fault is isolated to the real-time stream. No code or server settings were changed before the outage, so we need a careful diagnosis rather than a rollback. While you are inside the codebase I also need the sign-up and login flow repaired. New accounts cannot be created and existing users get stuck on the login screen—the form posts but never completes. Deliverables • Live stream starts and plays smoothly across modern browsers and mobile • Sign-up and login complete successfully and redirect as intended • Short summary of the root cause and the fixes applied, so I can maintain the solution going forward Acceptance criteria: the live stream runs uninterrupted for at least 30 minutes, and sign-up/login calls return 200 status codes with correct session handling. If you have experience with HTML5 players, HLS/RTMP, and typical authentication stacks, you should be able to resolve this quickly.