I'm stuck with production payment got bad request error

nope
npm start

PS C:\xampp\htdocs\web-payments> npm start

@square/[email protected] start
NODE_ENV=production micro --listen tcp://0.0.0.0:${PORT-3000}

‘NODE_ENV’ is not recognized as an internal or external command,
operable program or batch file.
PS C:\xampp\htdocs\web-payments>