NextJS SSR with Vercel not working

[camillevingere]

Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/nextjs

SDK Version

8.9.2

Framework Version

14.2.4

Link to Sentry event

No response

SDK Setup

// This file configures the initialization of Sentry on the server.
// The config you add here will be used whenever the server handles a request.
// https://docs.sentry.io/platforms/javascript/guides/nextjs/

import * as Sentry from "@sentry/nextjs";

const SENTRY_DSN = process.env.SENTRY_DSN || process.env.NEXT_PUBLIC_SENTRY_DSN;

Sentry.init({
dsn: SENTRY_DSN || 'DSN',

// Adjust this value in production, or use tracesSampler for greater control
tracesSampleRate: 1,

// Setting this option to true will print useful information to the console while you're setting up Sentry.
debug: false,

integrations: [Sentry.prismaIntegration()],

// Uncomment the line below to enable Spotlight (https://spotlightjs.com)
// spotlight: process.env.NODE_ENV === 'development',

});

Steps to Reproduce

1. Take a NextJS project
2. Deploy in production on Vercel
3. Don't forget to put env variables

Expected Result

The errors should be logged in Sentry

Actual Result

The errors are logged in local development in CSR and SSR but in production on VERCEL only the CSR is working. All that is an server side error is not logged in Sentry.

[lforst]

Hi, can you share how you are throwing errors that are not logged? Thanks!

[camillevingere]

Hi, here is an example :

`export const requiredAuth = async () => {
const user = await auth();

if (!user) {
throw new AuthError("You must be authenticated to access this resource.");
}

return user;
};`

This is working in local but not on Vercel.

[lforst]

Where are you calling requiredAuth? In a server component? Api route? Route handler? App dir, pages dir?

[camillevingere]

I am using it in a Server Component