nextjs - 💡(How to fix) Fix RSC endpoints always return 404 when deployed on Vercel [1 comments, 2 participants]

TL;DR

The issue with RSC prefetch not working as expected on Vercel deployment may be resolved by configuring the next.config.js file to handle prefetching correctly for the specific environment.

Guidance

• Verify that the next.config.js file is properly configured for Vercel deployment, checking for any environment-specific settings that might affect prefetching.
• Check the Vercel configuration to ensure that it is set up to handle React Server Components (RSC) and prefetching as expected.
• Review the network requests for the prefetches to confirm that the URLs being requested are correct and should not return 404 errors.
• Consider testing with a minimal reproduction case to isolate the issue and determine if it's specific to the current project setup or a more general problem with RSC prefetching on Vercel.

Example

No specific code example can be provided without more details on the current next.config.js setup and the exact prefetch URLs being requested.

Notes

The issue seems to be environment-specific (Vercel vs. local), which suggests that the configuration or setup might be the key to resolving the problem. Without more information on the project's configuration files and the exact behavior of the prefetch requests, it's challenging to provide a precise solution.

Recommendation

Apply workaround: Given the environment-specific nature of the issue, applying a workaround that involves adjusting the next.config.js for Vercel deployment or modifying how prefetching is handled in the React application might be necessary until a more permanent fix can be identified.