Getting Module Not Found Error for next/server

[bwheeele]

I have been trying to use the new auth.js so I have "next": "^14.1.0",
"next-auth": "^5.0.0-beta.11", I am still using pages though as well. I am trying to migrate from using Next.js 13.4 and MSAL to using next-auth. I have an auth.ts, auth.config.ts, my nextauth api and a middleware. I keep getting this error though while trying to login or calling getSession() as it seems when my app hits the api/auth/error I get a 500 and the error reads:

Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/node_modules/next/server' imported from /node_modules/next-auth/lib/env.js
Did you mean to import "next/server.js"?

I have tried looking everywhere but can't find any information about this error and what might be causing it. Hopefully I can find someone here who knows what the deal might be. Thank you!

[CommanderRedYT]

Did you get anything here yet? I have this exact same error...

[santiagotri]

Same here, with same environment (pages architecture) "next-auth": "^5.0.0-beta.11"

[choosenname]

I fixed it by using "next": "14.1.4"

[CommanderRedYT]

I fixed it by using "next": "14.1.4"

Had 14.2.3 before, you think it was broken after 14.1.4?

[choosenname]

Yap, 14.1.4 is the latest version that worked for me

[sKopheK]

I fixed it by using "next": "14.1.4"

14.2.16 here, i don't want to go back with next js because of an error in a library

[sKopheK]

i like the comment in next-auth/lib/env.js just before the failing import

// @ts-expect-error Next.js does not yet correctly use the `package.json#exports` field
import { NextRequest } from "next/server";

[shahargl]

is there any workaround for that? why should I go back to 14.1.4 for that? :(

[yaman3bd]

I have the same error. Im currently migrating from Pages Router to App Router. My approach is to first upgrade Next.js and all related libraries, adapt to the new APIs, and ensure everything works as expected with the Pages Router. Once that’s stable, I’ll proceed with the migration to the App Router.

⨯ [Error: Cannot find module '/node_modules/next/server' imported from /node_modules/next-auth/lib/env.js
Did you mean to import next/server.js?] {
  code: 'ERR_MODULE_NOT_FOUND',
  url: 'file:///node_modules/next/server'
}

my dependencies:

{
  "next": "15.0.3",
  "next-auth": "^5.0.0-beta.25"
}

[andrewdownss]

Has anyone found a work around?

[nickm980]

I went through next-auth package in node_modules and wherever it imports next/server I replaced with next/server.js, I did the same for the other dependencies. I also changed the api/auth/[...nextauth] a bit to solve some other issues

Seems to be working fine now, I'll test it in the morning and create a patch for myself.

[nickm980]

When I installed the dependencies with pnpm it was working but not with npm.