Fix RAG Application Errors

I have an existing AI-based application that requires debugging, UI improvements, and performance optimization. The main issues that need to be addressed are: Authentication: Users are being logged out whenever the page is refreshed... (Budget: £10 - £20 GBP, Jobs: AngularJS, API Development, Chatbot, Debugging, Frontend Development, JavaScript, Large Language Models (LLMs), Natural Language, User Interface / IA, Website Design)