Auth0 + Next.js 15 issues
Answered
American black bear posted this in #help-forum
American black bearOP
Hey everyone, I'm trying to use Next.js 15 for the first time with Auth0. Everything is working, the authentication flow, permissions etc, but I keep seeing these logs when I run my app:
That's because i have this line:
and also this error:
this is happening here:
Error: Route "/" used `cookies().getAll()`. `cookies()` should be awaited before using its value. Learn more: https://nextjs.org/docs/messages/sync-dynamic-apisThat's because i have this line:
const session = await getSession()and also this error:
Error: Route "/api/auth/[auth0]" used `params.auth0`. `params` should be awaited before using its properties. Learn more: https://nextjs.org/docs/messages/sync-dynamic-apisthis is happening here:
// src/app/api/auth/[auth0]/route.ts
import { handleAuth } from '@auth0/nextjs-auth0';
export const GET = handleAuth();
Answered by B33fb0n3
it looks like the auth0 methods are not yet optimized for next15. So either downgrade to next14 or use a different auth provider (like next-auth for example. But don't next-auth@beta or authjs. They are buggy)
--- Edit
Downgrading is pretty easy as described here: https://nextjs-forum.com/post/1315768887492608060#message-1315793262384251022
--- Edit
Downgrading is pretty easy as described here: https://nextjs-forum.com/post/1315768887492608060#message-1315793262384251022
10 Replies
it looks like the auth0 methods are not yet optimized for next15. So either downgrade to next14 or use a different auth provider (like next-auth for example. But don't next-auth@beta or authjs. They are buggy)
--- Edit
Downgrading is pretty easy as described here: https://nextjs-forum.com/post/1315768887492608060#message-1315793262384251022
--- Edit
Downgrading is pretty easy as described here: https://nextjs-forum.com/post/1315768887492608060#message-1315793262384251022
Answer
American black bearOP
yep, I found this topic https://community.auth0.com/t/nextjs-15-breaking-change-using-getsession-and-touchsession/150741
maybe should I downgrade to next 14? or maybe should I deploy with these errors? bcs it's working, it's just these errors on the console
I wouldn't just deploy it, as this is a very important service (auth in general). So when there are errors inside your auth system you could potentially leak secret data. You don't want that.
I recommend (and current am) downgraded to next14
I recommend (and current am) downgraded to next14
American black bearOP
yeah, seems like the best thing to do
nextjs provides an easy command to downgrade to a specific version?
yea, switch this number from next15 to (for example)
14.2.5 and use npm install to downgrade. Make sure you downgrade ereact and react-dom to 18 as well. Then scan thought your code (with typescript) to see stuff that comes thought next15 and "downgrade" them. The other "errors" that you got from auth0 will be fixed automatically 👍
American black bearOP
yup, I'm using react 19 rc version
yeah cool, thanks mate
happy to help