My production web app (React frontend, Python backend on AWS) has hit a critical snag. Some pages no longer render while the data they submit is not processed or saved. I am not certain whether a recent commit triggered this, so I need a seasoned full-stack developer to step in, diagnose, and resolve both the UI and data-handling failures. You will start by reproducing the bug, tracing its root cause on both layers, and then patching the code so every affected screen loads correctly and the backend once again validates, processes, and persists the data. Deliverables • Concise root-cause report • Fixed and tested React components/views • Patched Python logic restoring reliable data processing and storage • Short hand-over note or pull request description summarizing your changes and tests Speed and clear communication are important: please outline how soon you can begin and your typical turnaround for issues of this scope.