1. see server crash with error

TL;DR

• Verify the middleware configuration against the official Next.js documentation for version 15.5.4 to ensure it matches the expected format and supported features.

Guidance

• Review the next-middleware-minimal-example code to ensure the middleware matcher config is correctly implemented as per the official documentation.
• Check for any recent updates or changes in the Next.js middleware configuration syntax that might have been introduced in version 15.5.4.
• Test the server with a minimal middleware configuration to isolate the issue and identify if it's specific to the current config or a broader problem.
• Consider creating a minimal reproducible example to test the middleware configuration in isolation from the rest of the project code.

Example

No specific code example can be provided without modifying the original code, but it's recommended to compare the middleware configuration in the next-middleware-minimal-example with the official Next.js documentation examples.

Notes

• The issue might be due to a misunderstanding of the middleware configuration syntax or an unsupported feature in the current version of Next.js.
• Without more information about the specific error message or the middleware configuration code, it's difficult to provide a more precise solution.

Recommendation

• Apply workaround: Review and adjust the middleware configuration to match the official documentation and supported features in Next.js version 15.5.4, as this is likely to resolve the immediate issue of the server crashing due to an unsupported middleware matcher config.