Mac flutter doctor error “version solving failed”

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I had got a problem when i try to install flutter.
Here is the log.
Help me tks.

~flutter doctor
Downloading Dart SDK from Flutter engine 58a1894a1cd798de2f9a206f157a90d45944028b...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 93.6M 100 93.6M 0 0 7212k 0 0:00:13 0:00:13 --:--:-- 6959k
Building flutter tool...
Because flutter_tools depends on file 5.0.6 which doesn't match any versions,
version solving failed.
Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (9 tries left)


The problem lies within your pubspec.yaml file. The dependency File 5.0.6 doesn't exist, double check your pubspec.yaml that you have entered the dependency correctly like so

file: ^5.0.6


Otherwise, if the problem persists, try downgrading to 5.0.5.

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