سلام خسته نباشید 

استاد وقتی من دستور npm start رو وارد میکنم خطا‌های زیر رو میده 

Windows PowerShell
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PS C:\Users\Error\Desktop\tamrin Js> npm start
npm ERR! code ENOENT
npm ERR! syscall open
npm ERR! path C:\Users\Error\Desktop\tamrin Js\package.json
npm ERR! errno -4058
npm ERR! enoent ENOENT: no such file or directory, open 'C:\Users\Error\Desktop\tamrin Js\package.json'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent
npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Error\AppData\Roaming\npm-cache\_logs\2020-08-02T09_23_31_686Z-debug.log