value of getSession is null in getServerSideProps and getInitialProps

[Industrial]

Describe the bug
When I clone the example project from https://github.com/nextauthjs/next-auth-example and start the server and go to the /server route, the session variable is null.

Steps to reproduce

$ git clone https://github.com/nextauthjs/next-auth-example
$ cd next-auth-example
$ yarn
$ yarn dev

Now go to https://github.com/nextauthjs/next-auth-example/blob/main/pages/_app.js#L7 and add a console.log(pageProps.session).

Now open the browser and visit http://localhost:3000/server

Expected behavior
A session object.

Screenshots or error logs

Server:

[next-auth][warn][nextauth_url]
https://next-auth.js.org/warnings#nextauth_url NEXTAUTH_URL environment variable not set
null

Client:

null _app.js:7:10
[Fast Refresh] done hot-dev-client.js:182:2
[Fast Refresh] rebuilding hot-dev-client.js:196:6

Additional context
Currently having problems logging in so I only checked the logged case in this app but it does the same (null) in my own app while logged in.

I also tried replacing the getServerSideProps with getInitialProps (because of https://nextjs.org/docs/advanced-features/custom-app#caveats)

Feedback
Documentation refers to searching through online documentation, code comments and issue history. The example project refers to next-auth-example.

• Found the documentation helpful
• Found documentation but was incomplete
• Could not find relevant documentation
• Found the example project helpful
• Did not find the example project helpful

[dcolonv]

You can create a .env file on the root of the project, add a line NEXTAUTH_URL=http://localhost:3000, and restart the server. NEXTAUTH_URL environment variable is needed to start the api

[balazsorban44]

I am not entirely sure why you expected a session object. You must log in with one of the providers to see it. I just did what you said to reproduce, but I got the user session without a problem.