php warning call_user_func_array()

  • Hello,

    I’m seeing an error which seems to be triggered by this plugin.

    Warning: call_user_func_array() expects parameter 1 to be a valid callback, no array or string given in /{–site-root–}/wp-includes/class-wp-hook.php on line 298

    I disabled all plugins and managed to remove the warning message, then gradually switched them back on, isolating Collapsing Pages as the cause. I’m running version 1.0.1.

    Please advise,

    Many thanks, Jerry

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