why do I get pub get failed after Installing flutter package?

[FredWolfe]

I tried to install "rflutter_alert package" by pasting the dependencies in the pubspec.yaml file then I installed it using "Pub get", but I got this error instead;

Running "flutter pub get" in quizzler-flutter...
CreateProcessW failed 2

The system cannot find the file specifie

Command: C:\appbrews\flutter\bin\cache\dart-sdk\lib_internal\pub\asset\7zip\7za.exe e data.tar.gz pub get failed (1; Command: C:\appbrews\flutter\bin\cache\dart-sdk\lib_internal\pub\asset\7zip\7za.exe e data.tar.gz)

Process finished with exit code 1

[suptejas]

Restart your system, I have also been getting the same errors!