how to fix call_user_func_array warning in wordpress

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  87zencoolblog · Member · Dec 9, 2014 at 4:48 am

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  Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘gt_search_filter’ not found or invalid function name in /Applications/MAMP/htdocs/rankingbox/wp-includes/plugin.php on line 580

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  raincoaster · Member · Dec 9, 2014 at 8:24 am

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  same answer as here https://en.forums.wordpress.com/topic/seo-titles-showing-up-wrong?replies=2#post-2164528