每次运行flutter pub get命令时都会收到此错误
Running "flutter pub get" in backup_app...
pub get failed (1; no message)
运行flutter pub get -v后，我在此行中遇到了错误。
[ +3 ms] IO : Spawning "cmd /c ver" in C:\Users\smile\AndroidStudioProjects\backup_app\.
[ +4 ms] IO : Finished ver. Exit code 1.
[ ] | stdout:
[ ] | |
[ ] | | Microsoft Windows [Version 10.0.18363.1082]
[ ] | Nothing output on stderr.
任何人都请向我解释这意味着什么，并帮助我解决这个问题。