Apple provider callback not working Next-auth v4 (App Router)

Environment

System: OS: macOS 14.3.1 CPU: (10) arm64 Apple M2 Pro Memory: 273.83 MB / 32.00 GB Shell: 5.9 - /bin/zsh Binaries: Node: 18.18.1 - /usr/local/bin/node npm: 9.8.1 - /usr/local/bin/npm Browsers: Chrome: 122.0.6261.128 Safari: 17.3.1 npmPackages: next: 14.0.2 => 14.0.2 next-auth: ^4.24.5 => 4.24.7 react: ^18 => 18.2.0

Reproduction URL

https://github.com/nextauthjs/next-auth-example

Describe the issue

I integrated Apple Sign-in into my website but I constantly get this error:

[next-auth][error][OAUTH_CALLBACK_ERROR] 
https://next-auth.js.org/errors#oauth_callback_error invalid_client {
  error: i: invalid_client
      at e.exports (/var/task/.next/server/chunks/674.js:39:35799)
      at q.grant (/var/task/.next/server/chunks/674.js:39:15085)
      at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
      at async q.callback (/var/task/.next/server/chunks/674.js:39:2818)
      at async l (/var/task/.next/server/chunks/674.js:6:32639)
      at async Object.c (/var/task/.next/server/chunks/674.js:30:781)
      at async m (/var/task/.next/server/chunks/674.js:6:16179)
      at async a (/var/task/.next/server/chunks/674.js:30:18364)
      at async e.length.t (/var/task/.next/server/chunks/674.js:30:19780)
      at async /var/task/node_modules/next/dist/compiled/next-server/app-route.runtime.prod.js:6:41304 {
    name: 'OAuthCallbackError',
    code: undefined
  },
  providerId: 'apple',
  message: 'invalid_client'
}

I already have Google sign-in and it is working. When I try to sign-in via Apple, callback does not work and this is the URL I get as a result: https://www.pinify.co/signin?callbackUrl=https%3A%2F%2Fwww.pinify.co%2Fdashboard&error=OAuthCallback

I have used this script to generate the client secret.

I am aware that some people faced this issue in the past and I tried numerous solutions like https://github.com/nextauthjs/next-auth/discussions/3503, https://github.com/nextauthjs/next-auth/discussions/5879, https://github.com/nextauthjs/next-auth/issues/5810, https://github.com/nextauthjs/next-auth/issues/6788 but none of them could make it work. Any ideas?

How to reproduce

Navigate to https://www.pinify.co/signin and click "Continue with Apple". See error.

This is the current code I am using.

import { NextAuthOptions, User, getServerSession } from "next-auth";
import prismadb from "@/lib/prismadb";

import GoogleProvider from "next-auth/providers/google";
import AppleProvider from "next-auth/providers/apple";
import type { DefaultSession } from 'next-auth';

declare module 'next-auth' {
  interface Session {
    user: DefaultSession['user'] & {
      id: string; // Custom Session property
    };
  }
}

export const authConfig: NextAuthOptions = {
    debug: true,
    pages: {
      signIn: "/signin"
    },
    providers: [
        GoogleProvider({
          clientId: process.env.GOOGLE_CLIENT_ID as string,
          clientSecret: process.env.GOOGLE_CLIENT_SECRET as string,
          allowDangerousEmailAccountLinking: true,
        }),
        AppleProvider({
          authorization: {
            params: {
              scope: "name email",
              response_mode: "form_post",
              response_type: "code",
            },
          },
          clientId: process.env.APPLE_CLIENT_ID as string,
          clientSecret: process.env.APPLE_CLIENT_SECRET as string,
          allowDangerousEmailAccountLinking: true,

        }),
    ],
    cookies: {
      csrfToken: {
        name: 'next-auth.csrf-token',
        options: {
          httpOnly: false,
          sameSite: 'none',
          path: '/',
          secure: true
        }
      },
      pkceCodeVerifier: {
        name: "next-auth.pkce.code_verifier",
        options: {
          httpOnly: false,
          sameSite: "none",
          path: "/",
          secure: true,
        },
      },
      callbackUrl: {
        name: `__Secure-next-auth.callback-url`,
        options: {
          httpOnly: false,
          sameSite: 'none',
          path: '/',
          secure: true,
        },
      },
    },  
    callbacks: {
      async signIn({ user, account, profile }) {
          const email = user.email;
          if (email) {
            let existingUser = await prismadb.user.findUnique({
              where: { emailAddress: email },
            });

            // If user doesn't exist, we create one. 
            if (!existingUser) {
              existingUser = await prismadb.user.create({
                data: {
                  name: user.name || email,
                  emailAddress: email,
                },
              });
            }
          }
          return true; // Returning true allows the sign-in to proceed
      },
      async session({ session, user }) {
          // Optionally customize the session object
          // e.g., add user ID or roles from the database to the session
          if (session.user){        
              const dbUser = await prismadb.user.findUnique({
                  where: { emailAddress: session.user.email || undefined }
              });

              if (dbUser) {
                  return { ...session,
                      user: { ...session.user,
                        id: dbUser.id
                      }
                  }
              }
          }
          return session;
      },
      async redirect({ url, baseUrl }) {
        if (url.startsWith("/")) return `${baseUrl}${url}`
        else if (new URL(url).origin === baseUrl) return url
        return baseUrl
      }
    }
};

Expected behavior

Google, Kakao, Line, Facebook is working flawlessly. I expect the Apple Provider to work the same way.

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

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nextauthjs / next-auth