variable @wind-beaufort-0 is undefined on line 1 in file '/Content/icons/weather-icons/less/icon-classes/classes-beaufort.less':
   []: /beginning of file
  [1]: .wi-wind-beaufort-0:before {content: @wind-beaufort-0;}
       -------------------------------------^
  [2]: .wi-wind-beaufort-1:before {content: @wind-beaufort-1;}