خطای Both Entity Framework Core and Entity Framework 6 are installed

چندتا تیبل به برنامه اضافه کردم و وقتی مایگریشن رو میزنم این خطا رو میده :

PM> Add-Migration mig2
Both Entity Framework 6 and Entity Framework Core are installed. The Entity Framework 6 tools are running. Use 'EntityFrameworkCore\Add-Migration' for Entity Framework Core.
A version of Entity Framework older than 6.3 is also installed. The newer tools are running. Use 'EntityFramework\Add-Migration' for the older version.
No migrations configuration type was found in the assembly 'WareHouse.API'. (In Visual Studio you can use the Enable-Migrations command from Package Manager Console to add a migrations configuration).
PM>