React Native "env" is not an internal or external command how to treat?

Question

Node.js

I got into a project with dinosaurs who wrote an application on React Native CLI - but this is half the trouble.
in packaje.json we have the following command

{"run-android": "env ENVFILE=.env npx react-native run-android"}

and when using it -> npm run run-android we get
"env" is not an internal or external
command, executable program or batch file.
Naturally, the .env file lives nearby

. How to treat?