Scaffold-Stark/speedrunstark

AI Summary: Improve error handling in a Next.js API route for a StarkNet project. The task involves modifying the API to return appropriate HTTP status codes (404 and 400) for metadata download failures and displaying informative toast messages to the user instead of generic error messages.

AI Summary: Debug and fix a NextJS error that occurs when navigating to the 'Debug Contracts' page in Challenges 1 and 2 of the SpeedRunStark project. The error manifests as a blank page with a console error. The solution requires investigating the NextJS application's routing and error handling mechanisms within the context of the provided Scaffold-Stark project.