Less.php 1.7.0.2

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Time (PHP):0.009337
Time (Request)0.569976
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File: css-guards
Warning (2) count(): Parameter must be an array or an object that implements Countable
    in: /var/www/peoplematters.com/sites/all/libraries/lessphp/lib/Less/Visitor/toCSS.php
    on line: 113
    Request: /sites/all/libraries/lessphp/test/?dir=lessjs&file=css-guards
    Method: GET
Show Backtrace
Array
(
    [0] => Array
        (
            [file] => /var/www/peoplematters.com/sites/all/libraries/lessphp/lib/Less/VisitorReplacing.php
            [line] => 17
            [function] => visitRuleset
            [class] => Less_Visitor_toCSS
            [object] => object Less_Visitor_toCSS
            [type] => ->
            [args] => array(2)
        )

    [1] => Array
        (
            [file] => /var/www/peoplematters.com/sites/all/libraries/lessphp/lib/Less/VisitorReplacing.php
            [line] => 41
            [function] => visitObj
            [class] => Less_VisitorReplacing
            [object] => object Less_Visitor_toCSS
            [type] => ->
            [args] => array(1)
        )

    [2] => Array
        (
            [file] => /var/www/peoplematters.com/sites/all/libraries/lessphp/lib/Less/Tree/Ruleset.php
            [line] => 64
            [function] => visitArray
            [class] => Less_VisitorReplacing
            [object] => object Less_Visitor_toCSS
            [type] => ->
            [args] => array(1)
        )

    [3] => Array
        (
            [file] => /var/www/peoplematters.com/sites/all/libraries/lessphp/lib/Less/Visitor/toCSS.php
            [line] => 163
            [function] => accept
            [class] => Less_Tree_Ruleset
            [object] => object Less_Tree_Ruleset
            [type] => ->
            [args] => array(1)
        )

    [4] => Array
        (
            [file] => /var/www/peoplematters.com/sites/all/libraries/lessphp/lib/Less/Visitor/toCSS.php
            [line] => 105
            [function] => visitRulesetRoot
            [class] => Less_Visitor_toCSS
            [object] => object Less_Visitor_toCSS
            [type] => ->
            [args] => array(1)
        )

)