سلام

ممنون میشم کمکم کنید

من سایتی رو با mvc و sql 2014 نوشتم و آپلود کردم توی کنترل پنل plesk و از این آموزشی که قرار دادین استفاده کردم.

اما بعد از باز کردن سایت این ارور رو نشون میده

The context is being used in Code First mode with code that was generated from an EDMX file for either Database First or Model First development.  This will not work correctly. To fix this problem do not remove the line of code that throws this exception. If you wish to use Database First or Model First, then make sure that the Entity Framework connection string is included in the app.config or web.config of the start-up project. If you are creating your own DbConnection, then make sure that it is an EntityConnection and not some other type of DbConnection, and that you pass it to one of the base DbContext constructors that take a DbConnection. To learn more about Code First, Database First, and Model First see the Entity Framework documentation here: http://go.microsoft.com/fwlink/?LinkId=394715

دلیلش به کانکشن استرینگ مربوطه یا چیز دیگه؟