bla@beta:/var/www/html# php cmd.php xf:addon-upgrade XFMG
Upgrading XenForo Media Gallery van 2.0.1 naar 2.0.2...
Confirm upgrade? (y/n)y
Too many arguments, expected arguments "command" "id" "action".
  [Symfony\Component\Process\Exception\ProcessFailedException]
  The command "'/usr/bin/php7.0' '/var/www/html/cmd.php' 'xf:addon-sub-action
  ' 'XFMG' 'upgrade' '--k=fed472577e48a50b405b8e7dec4c095e4162a6c0' ''" faile
  d.
  Exit Code: 1(General error)
  Working directory: /var/www/html
  Output:
  ================
  Too many arguments, expected arguments "command" "id" "action".
  Error Output:
  ================
xf:addon-upgrade [-f|--force] [--] <id>