Auth.js · server log

MissingAdapter

[auth][error] MissingAdapter: Email login requires an adapter. Read more at https://errors.authjs.dev#missingadapter

What it means

Magic links (Email / Nodemailer / Resend providers) and session: { strategy: "database" } both need a database adapter to store tokens and sessions.

Common causes

• Added the Nodemailer or Resend provider without an adapter
• Set strategy: "database" without an adapter
• Imported the adapter but passed it in only one of two config files

How to fix it

1. Install @auth/prisma-adapter (v5 adapters live under @auth/, not @next-auth/)
2. Pass adapter: PrismaAdapter(db) to NextAuth
3. Add the User, Account, Session and VerificationToken models and run a migration

import { PrismaAdapter } from "@auth/prisma-adapter";
import { db } from "@/lib/db";

export const { handlers, auth, signIn, signOut } = NextAuth({
  adapter: PrismaAdapter(db),
  session: { strategy: "database" },
  providers,
});

Prompt for Cursor or Claude Code

Auth.js says MissingAdapter. Wire @auth/prisma-adapter into auth.ts, check my Prisma schema has the User, Account, Session and VerificationToken models from the Auth.js Prisma adapter docs, and give me the migration command.

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