Issue with MongoDB ObjectID.

 ERROR   Failed to create user                                                 Better Auth
Invalid prisma.user.create() invocation:


Inconsistent column data: Malformed ObjectID: provided hex string representation must be exactly 12 bytes, instead got: "pFAREXp_F5MYQrfN_ikFq", length 21 for the field 'id'.

  Invalid prisma.user.create() invocation:

model User {
  id                  String                 @id @default(auto()) @map("_id") @db.ObjectId
  email               String                 @unique
  name                String
}

import { prisma } from "@/db";
import { betterAuth } from "better-auth";
import { prismaAdapter } from "better-auth/adapters/prisma";
import { username } from "better-auth/plugins";

export const auth = betterAuth({
  emailAndPassword: {
    enabled: true,
  },
  database: prismaAdapter(prisma, {
    provider: "mongodb",
  }),
  plugins: [username()],
});