Abp错误编目

'xxxAppService' is waiting for the following dependencies:
- Service 'Abp.Domain.Repositories.IRepository`2[[xxxType, xxxAssembly, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[KeyType, System.Private.CoreLib, Version=5.0.0.0, Culture=neutral, PublicKeyToken=xxxxxxxxx]]' which was not registered.

DbContext中没用声明相关的DbSet

public DbSet<xxxType> xxxTypes { get; set; }