Invalid object name 'DAppRoles'

In my EF Core 2.2 app, I changed DBSet DRoles to DairyRoles in the AppDBContextlike this:

public DBSet<DairyRole> DairyRoles { get; set; }

and then executed

context.Database.EnsureCreated();

Error

System.Data.SqlClient.SqlException (0x80131904): Invalid object name 'DairyRoles'.

I thought context.Database.EnsureCreated(); handles migration. Please help.