型号很简单：

public class MyThing
    {
        public int MyThingId { get; set; }

        public int UserId { get; set; }
        public string Title { get; set; }
        public string Address { get; set; }
        public string Description { get; set; }
        public DateTime Date { get; set; }
  }

当我尝试用内置的脚手架创建一个新的控制器，我得到以下错误：

“Unable to retrieve Metadata for MyThing”

“Using the same DbCompiledModel to create contexts against different
types of database servers is not supported. Instead,create a
separate DbCompiledModel for each type of server being used.

如何让脚手架工作？