Get error when execute "npm start" command.

whenever i run the commannd 'npm start' in node.js command prompt. it gives me an error. and the project do no trun.

D:\react\reactjs>npm start npm ERR! missing script: start

npm ERR! A complete log of this run can be found in: npm ERR! C:\Users\Terminater\AppData\Roaming\npm-cache_logs\2020-04-07T07_3 0_21_951Z-debug.log