Problem With EF Core.

Hi, I using ms Visual studio 2017 and Xamarin.Forms with .Net Standard Strategy, it works Well and it Deploy On My Phone(Samsung SMA7 2017) Android Version 7.0, but it Won't Run Exactly When I Add EF Core And EF Core sqlite Nugets, When I Want to Run Program On My Phone It Will Debugged And Deployed but it will Exit Debbuging Before The Page Gets Loaded