title: I always use "concurrently" for mern project (nodejs & reactjs) but now I can't able to install concurrently
body: <p>PS E:\test\react_express_starter> npm i concurrently</p>
  
  <p>npm ERR! Unexpected end of JSON input while parsing near '...Kz5ckaK\nf5E8uavgOU9d'</p>
  
  <p>npm ERR! A complete log of this run can be found in:
  npm ERR!     C:\Users\Masum\AppData\Roaming\npm-cache_logs\2018-12-29T16_26_15_224Z-debug.log</p>