Flutter Chat App Bug Fix

I'm having issues with my Flutter chat app where the chat doesn't enter without a refresh and notifications for new messages aren't displaying.

Key issues:
- Chat screen is having the problems
- Affected functions include:
- Loading chat history
- Entering new messages
- Receiving notifications

The ideal freelancer for this project should have:
- Strong experience with Flutter
- Proven track record of debugging chat applications
- Ability to fix UI issues on chat screen
- Excellent problem-solving skills and attention to detail