E: (stream) line: 62, Syntax Error, token: /, /

[Sanshain]

Hi! Does this library support comments?

On this code:
".less{}\t\t\t\t\t\t\t\t// less sign\n@i_height : 7em;\n@backcolor: bisque; \t\t\t\t//azure;\n@border_r : 15px;\n\n@_block_side : lighten(lightgray, 12%);\n\n.profiles_list{\n\tlist-style-type: none;\n\tpadding: 0;\n\tborder-left:1px solid @_block_side;\n\tborder-right:1px solid @_block_side;\n\t\n\tborder-radius:@border_r;\n\tmargin-left: 20px; }\n.profiles_list > li{\n\ttransition: 1.5s;\n\t\t\t\n\tposition: relative;\n\theight:@i_height;\n\tpadding: 10px 140px 5px 20px;\n\tbox-sizing: border-box;\n\n\tbackground-color: lighten(@backcolor, 8%);\n\toverflow:hidden;\n\twhite-space:nowrap;\t\n\t\n\tmargin-bottom:10px;\n\t\n\tborder-radius:@border_r;\n\tborder:1px solid darken(@backcolor, 8%);\n\tcursor:pointer;\t}\n.profiles_list>li:hover{\n\tbackground-color:lighten(orange, 40%);\n\tborder:1px solid darken(@backcolor, 40%);\n}\n\n.profiles_list > li h3{\n margin:10px 0 0 20px;\n font-family:'Tenor Sans';\n}\n.i_desc{\n margin:10px 0 0 20px;\n display:inline-block;\n font-size: large;\n color:brown;\n width:100%;\n overflow:hidden;\n text-overflow:ellipsis;/*just for ie*/\n}\n\n.logo{\n position: absolute;\n top:0;\n right:0;\n background-color: green;\n width: @i_height;\n height: @i_height;\n \n transition:1s;\n opacity:0.8;\n background: url(http://raduga-shop.ru/wa-data/public/shop/products/18/14/21418/images/23955/23955.96x96.jpg) no-repeat center; \n background-size:cover;\n border:1px solid lightgray;\n border-radius: @border_r;\n overflow:hidden;\n box-sizing:border-box;}\n.logo img{\n transition:1s;\n width: @i_height;\n height: @i_height;\t\n}\n\n.i_mnu{\n position:absolute;\n bottom:-40px;\n \n border-radius:15px 0px 0 0;\n overflow:hidden;\n right:@i_height;\n \n background-color: beige;\n transition: opacity 1s, bottom 1s ease-out;\n\n opacity:0;\n}\n.profiles_list>li:hover .i_mnu{\n bottom:0px;\n opacity:0.95;\n}\n\n\n.i_mnu>button{\n transition:1s;\n \n padding:10px;\n cursor: pointer; \n color:#98846d;\n border:none;\n /*border:1px burlywood solid;*/\n}\n.i_mnu>button:hover{\n background-color: orange;\n color:black;\n}"

I have the error:

CompilationError: E: (stream) line: 62, Syntax Error, token: /, /