Support

Account

Home Forums General Issues call_user_func_array() expects parameter 1 to be a valid callback Reply To: call_user_func_array() expects parameter 1 to be a valid callback

  • Somewhere in your code you have a line that looks something like this
    add_filter('some-hook-name', 'my_acf_op_init');
    or
    add_action('some-hook-name', 'my_acf_op_init');
    the first part is the hook, the error does not indicate what hook it is on. The second part is the function to be called, that function does not exist.