problem with woocommerce plugin

Hello,

I have a problem in our website http://www.moxx.fr
After booking an order, in the checkout process, we have this error message :

Warning: array_filter() expects parameter 1 to be array, string given in /home/wp_znn5fx/moxx.fr/wp-content/plugins/woocommerce-checkout-field-editor/woocommerce-checkout-field-editor.php on line 1122

Could you help me to fix this problem, please.

Thanks for your help