Couldn't get session in nextjs middleware

[Sahil-Gupta584]

Environment

  System:
    OS: Windows 11 10.0.26100
    CPU: (8) x64 12th Gen Intel(R) Core(TM) i3-1215U
    Memory: 1.11 GB / 7.71 GB
  Binaries:
    Node: 22.13.1 - C:\nvm4w\nodejs\node.EXE
    Yarn: 1.22.22 - ~\AppData\Roaming\npm\yarn.CMD
    npm: 10.9.2 - C:\nvm4w\nodejs\npm.CMD
  Browsers:
    Edge: Chromium (132.0.2957.140)
  npmPackages:
    @auth/prisma-adapter: ^2.9.0 => 2.9.0 
    next: 15.3.0 => 15.3.0
    next-auth: ^5.0.0-beta.27 => 5.0.0-beta.27
    react: ^19.0.0 => 19.1.0

Reproduction URL

https://github.com/Sahil-Gupta584/authjs-middleware-issue

Describe the issue

I trying to implement route protection in my nextjs project according to doc but in am getting this err:

console>

my middleware.ts simply has>
export { auth as middleware } from "@/auth";

How to reproduce

in nextjs project create a middleware file and write>
export { auth as middleware } from "@/auth

Expected behavior

the middle ware should work

[sorcerb]

In the auth.ts file, you're not using the auth.js library.
There's no point in asking for help about this here.