i ran into an error on my Nextjs project and i don’t know how to fix it since it’s not my fault.

Main problem

This error: ./node_modules/next/dist/server/lib/router-utils/filesystem.d.ts:65:72 Type error: '>' expected is returned once i use "npm run build", the body of it is:

  63 |     dynamicRoutes: FilesystemDynamicRoute[];
  64 |     nextDataRoutes: Set<string>;
> 65 |     exportPathMapRoutes: undefined | ReturnType<typeof buildCustomRoute<Rewrite>>[];
     |                                                                        ^
  66 |     devVirtualFsItems: Set<string>;
  67 |     prerenderManifest: PrerenderManifest;

I tried to run "npm upgrade", updating Nodejs (actually at 23.3.0, also tried to use an LTS version) since two day to see if any changes happened to next module, nothing happened at all, and i don’t know how to fix this.