ValidationError: Metadata for entity Object not found

Describe the bug Cannot seem to create a new entity using the repository pattern, not matter how much I try to simplify the entities I always seem to hit this error:

ValidationError: Metadata for entity Object not found

Stack trace

Creating user
{ username: 'admin', password: 'XXXXX', id: '0' }
ValidationError: Metadata for entity Object not found
    at Function.missingMetadata (/Users/johnyick/Documents/code/gitlab/nestjs-boilerplate/node_modules/mikro-orm/dist/utils/ValidationError.js:103:16)
    at MetadataStorage.get (/Users/johnyick/Documents/code/gitlab/nestjs-boilerplate/node_modules/mikro-orm/dist/metadata/MetadataStorage.js:26:43)
    at UnitOfWork.cascade (/Users/johnyick/Documents/code/gitlab/nestjs-boilerplate/node_modules/mikro-orm/dist/unit-of-work/UnitOfWork.js:267:36)
    at UnitOfWork.persist (/Users/johnyick/Documents/code/gitlab/nestjs-boilerplate/node_modules/mikro-orm/dist/unit-of-work/UnitOfWork.js:71:14)
    at EntityManager.persistLater (/Users/johnyick/Documents/code/gitlab/nestjs-boilerplate/node_modules/mikro-orm/dist/EntityManager.js:284:34)
    at EntityManager.persist (/Users/johnyick/Documents/code/gitlab/nestjs-boilerplate/node_modules/mikro-orm/dist/EntityManager.js:267:14)
    at EntityRepository.persist (/Users/johnyick/Documents/code/gitlab/nestjs-boilerplate/node_modules/mikro-orm/dist/entity/EntityRepository.js:9:24)
    at UsersService.create (/Users/johnyick/Documents/code/gitlab/nestjs-boilerplate/dist/core/users/users.service.js:24:37)
    at /Users/johnyick/Documents/code/gitlab/nestjs-boilerplate/dist/core/users/users.controller.js:29:35 {
  entity: undefined,
  name: 'ValidationError'
}

To Reproduce service.ts

    constructor(
        @InjectRepository(User)
        private readonly usersRepository: EntityRepository<User>,
    ) { }

    async create(user: User): Promise<void> {
        return this.usersRepository.persistAndFlush(user);
    }

controller.ts (constructor)

console.log('Creating user');
console.log(ADMIN_USER)
this.usersService.create(ADMIN_USER).then(res => {
    console.log('Created user')
    console.log(res);
}).catch(err => {
    console.error(err);
});

Expected behavior Object to be created as a row within the db table, User. I can see the tables have all created from the migration.

Versions “mikro-orm”: “^3.6.2”, “typescript”: “^3.7.4”,

[B4nan]

You can use repository too, repo.create(payload) is the same.

[B4nan]

You are trying to persist POJO, you need to provide instance of the entity.