من تمام مراحل تا env  رو رفتم ولی وقتی توی ترمینال flutter doctor رو میزنم 

این خطا میاد 

Running pub upgrade...
Resolving dependencies... (3.9s)
Because flutter_tools depends on test any which doesn't exist (authorization failed), version solving failed.
Insufficient permissions to the resource at the https://pub.dev package repository.
You can modify credentials using:
   dart pub token add https://pub.dev
Error (69): Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (5 tries left)