• You are checking $_REQUEST[‘post’] on line 12 which causes an undefined error when ‘post’ is not set. (Most admin pages). Please change row 12 to the following to account for it:

    Before:
    if(strpos($_SERVER['PHP_SELF'], '-new.php')|| ){

    After:
    if(strpos($_SERVER['PHP_SELF'], '-new.php') || (isset($_REQUEST['post']) && $_REQUEST['post'] != '')){

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