Arguments: 
  D:\apps\nodejs\node.exe D:\apps\Yarn\bin\yarn.js install --prefer-offline

PATH: 
  D:\apps\Anaconda3\DLLs;D:\apps\Anaconda3\Library\bin;D:\apps\Git\cygdrive\d\apps\anaconda3;D:\apps\Git\mingw64\bin;D:\apps\Git\usr\bin;C:\Users\Pratap Vardhan\bin;C:\Program Files\Docker\Docker\Resources\bin;D:\apps\Git\cmd;D:\apps\cygwin64\bin;C:\Program Files\ImageMagick-7.0.7-Q16;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0;C:\Program Files (x86)\Skype\Phone;C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit;C:\ProgramData\chocolatey\bin;D:\apps\Yarn\bin;D:\apps\Microsoft VS Code\bin;D:\apps\nodejs;D:\apps\PostgreSQL\pg10\bin;C:\WINDOWS\System32\OpenSSH;D:\apps\Anaconda3;D:\apps\Anaconda3\Scripts;D:\apps\cygwin64\bin;C:\Program Files\Docker\Docker\Resources\bin;C:\Program Files\ImageMagick-7.0.7-Q16;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Program Files (x86)\Skype\Phone;C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit;C:\ProgramData\chocolatey\bin;D:\apps\nodejs;D:\apps\Yarn\bin;D:\apps\Microsoft VS Code\bin;C:\Users\Pratap Vardhan\AppData\Local\Microsoft\WindowsApps;C:\Users\Pratap Vardhan\AppData\Local\Yarn\bin;C:\Users\Pratap Vardhan\AppData\Roaming\npm;%USERPROFILE%\AppData\Local\Microsoft\WindowsApps;D:\apps\Anaconda3\lib\site-packages\pypiwin32_system32

Yarn version: 
  1.5.1

Node version: 
  8.11.3

Platform: 
  win32 x64

npm manifest: 
  {
    "name": "controlpanel",
    "version": "1.0.0",
    "description": "controlpanel application",
    "main": "index.js",
    "scripts": {
      "test": "npm run test",
      "install": "uglifyjs webshell.js > webshell.min.js"
    },
    "author": "",
    "license": "ISC"
  }

yarn manifest: 
  No manifest

Lockfile: 
  # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
  # yarn lockfile v1

Trace: 
  Error: Command failed.
  Exit code: 1
  Command: C:\WINDOWS\system32\cmd.exe
  Arguments: /d /s /c uglifyjs webshell.js > webshell.min.js
  Directory: d:\gitgram\gramex\gramex\apps\admin
  Output:
  
      at ProcessTermError.MessageError (D:\apps\Yarn\lib\cli.js:186:110)
      at new ProcessTermError (D:\apps\Yarn\lib\cli.js:226:113)
      at ChildProcess.<anonymous> (D:\apps\Yarn\lib\cli.js:30281:17)
      at emitTwo (events.js:126:13)
      at ChildProcess.emit (events.js:214:7)
      at maybeClose (internal/child_process.js:925:16)
      at Process.ChildProcess._handle.onexit (internal/child_process.js:209:5)
