Fix Bug in Existing Review and Rating Mobile App

I am looking for an experienced mobile app developer to fix one specific bug in an existing review and rating application for iOS and Android. The app is already developed, so this is not a full app development project. The issue may be related to phone-number OTP login, star ratings, text reviews, image or video uploads, push notifications, average rating calculations, moderation tools, API communication, or build errors. I will provide the source code, error details, screenshots, logs, and steps to reproduce the problem. The developer must identify the root cause, fix the issue without affecting existing features, test the affected functionality, and provide the updated source code with a brief explanation of the changes. The fixed budget is $10 USD for one small and clearly defined bug. Additional bugs or new features will be handled separately. The task should be completed within one day. Please apply only if you have experience with Flutter or React Native, can start immediately, and accept the $10 fixed budget.