Error in the customizer on spsf.nl

Dear people of WPMUDEV,

On our website spsf.nl we are getting these errors in the customizer:
Warning: in_array() expects parameter 2 to be array, null given in /home/spsf/public_html/wp-includes/class-wp-customize-manager.php on line 330

Warning: in_array() expects parameter 2 to be array, null given in /home/spsf/public_html/wp-includes/class-wp-customize-manager.php on line 335

I have provided you access to the website via the Dashboard, if you could check to see if there's something that is an obvious fix please let me know :slight_smile:.

Many thanks for your help!

Cheers.

Sandra :slight_smile: