variable @font-color-dark is undefined on line 55 in file '/Content/Theme.less':
 [54]: .ui-widget input, .ui-widget select, .ui-widget textarea, .ui-widget button { font-family: segoe ui, Arial, sans-serif; font-size: 1em; }
 [55]: .ui-widget-content { border-left: 1px solid #ffffff; background: #dddddd; color: @font-color-dark; }
       ---------------------------------------------------------------------------------^
 [56]: .ui-widget-content a { color: @font-color-dark; }