variable @line-height-computed is undefined on line 10 in file '/Content/plugins/bootstrap-social/bootstrap-social.less':
  [9]: 
 [10]: @bs-height-base: (@line-height-computed + @padding-base-vertical * 2);
       ------------------^
 [11]: @bs-height-lg:   (floor(@font-size-large * @line-height-base) + @padding-large-vertical * 2);