Set the 'program' value in your launch config

i'm working on ubuntu with vs code with dart but while runing i get this error " Set the 'program' value in your launch config (eg 'bin/main.dart') then launch again " and i have add in lanuch.json

"program": "bin/main.dart",

and i get this error

Error when reading 'bin/main.dart': No such file or directory.i have installed dart using this stepshttps://dart.dev/get-dart