sdk version solving failed error on executing code

I am beginner in flutter. Doing a course from Udemy but facing lots of problems.I am making shop app.

The current Flutter SDK version is 0.0.0-unknown.

I'm getting the below error when I run it in Android Studio

Because shop_app depends on provider >=4.0.0-dev which requires Flutter SDK version >=1.12.1, version solving failed. pub get failed (1; Because shop_app depends on provider >=4.0.0-dev which requires Flutter SDK version >=1.12.1, version solving failed.)