- Refactored import statements in api_server.py to enhance module organization, including changes to the routing and server setup. - Updated the method for removing routes to ensure compatibility with the new app structure. - Adjusted the handling of chat completion requests to improve error responses and streamline processing. - Modified serving modules to align with the new import paths and enhance code clarity. Signed-off-by: tzhouam <tzhouam@connect.ust.hk>