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": "admin",
    "scripts": {
      "install": "uglifyjs webshell.js > webshell.min.js"
    },
    "devDependencies": {
      "uglify-js": "3"
    }
  }

yarn manifest: 
  No manifest

Lockfile: 
  # THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
  # yarn lockfile v1
  
  
  commander@~2.16.0:
    version "2.16.0"
    resolved "https://registry.yarnpkg.com/commander/-/commander-2.16.0.tgz#f16390593996ceb4f3eeb020b31d78528f7f8a50"
  
  source-map@~0.6.1:
    version "0.6.1"
    resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
  
  uglify-js@3:
    version "3.4.6"
    resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.4.6.tgz#bc546d53f3e02b05d97d0ca5a7abfe0fb0384ddb"
    dependencies:
      commander "~2.16.0"
      source-map "~0.6.1"

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\admin2
  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)
