When I run in terminal flutter create firstapp is stuck it's showing resolving dependencies.
C:\dev>flutter create firstapp
Creating project firstapp...
Resolving dependencies in firstapp... (6:04.2s)
This Resolving dependencies only shows up when creating a first app and it took about 2-3 hours and it is still building.
I had the same problem and solved it by doing:
The cause for me might be that when you uninstall an extension files aren't erased.
I hope I helped you