Error for saving multi select options

  • Hi,

    I’ve just installed this plugin and it’s working well except from when I try and save some options in the front-end I get this error:
    Warning: trim() expects parameter 1 to be string, array given in wp-includes/class-wp-query.php on line 783

    Warning: strip_tags() expects parameter 1 to be string, array given in wp-includes/formatting.php on line 1966

    Any ideas how I can stop this?

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