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weird error

  • Hi,

    I recently noticed the following error;

    Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'sk_display_custom_fields' not found or invalid function name in /usr/www/users/xxxx/xxxx/wp-includes/class-wp-hook.php on line 286

    not sure how to solve it, any suggestions?

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