Credentials provider when user not found (null) create error

Provider type

Credentials

Environment

  System:
    OS: Windows 10 10.0.19045
    CPU: (8) x64 Intel(R) Core(TM) i7-7700K CPU @ 4.20GHz
    Memory: 4.41 GB / 15.92 GB
  Binaries:
    Node: 21.7.3 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.22 - C:\Program Files\nodejs\yarn.CMD
    npm: 10.5.0 - C:\Program Files\nodejs\npm.CMD
    pnpm: 9.10.0 - ~\AppData\Local\pnpm\pnpm.EXE
  Browsers:
    Edge: Chromium (127.0.2651.74)
    Internet Explorer: 11.0.19041.4355
  npmPackages:
    next: latest => 14.2.17
    next-auth: 5.0.0-beta.18 => 5.0.0-beta.18
    react: 18.3.0 => 18.3.0

Reproduction URL

https://bianca-ai.vercel.app/dashboard

Describe the issue

when returning null instead of user crashh hapens

Unhandled Runtime Error

Error: Read more at https://errors.authjs.dev#credentialssignin

app\login\page.tsx (19:13) @ async $$ACTION_0

17 | action={async (formData: FormData) => { 18 | 'use server';

19 | await signIn('credentials', { | ^ 20 | redirectTo: '/dashboard', 21 | email: formData.get('email') as string, 22 |

How to reproduce

try returning null instead of User . or when wrap singIn with try catch redirect not workin.

Expected behavior

instead of doing crashh error it need to redirect /error page or back to /login

We could not detect a valid reproduction link. Make sure to follow the bug report template carefully.

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I did not open this issue, but it is relevant to me, what can I do to help?

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nextauthjs / next-auth