The system cannot find the path specified. #7

I was thinking to purchase the paid version, but trying the free version and it's throwing lots of errors!

First is says - [NG_SERVE] 'cross-env' is not recognized as an internal or external command,

I installed that from NPM

Now it says - The system cannot find the path specified.

While I checked manually and the file exits, but I got this error The system cannot find the path specified. when running ng serve