error when deleting customer

hello,

if I want to delete some sseveral customers (clients in french) I have an error page and the message I get in webmail is :

Détails de l’erreur
======================
Une erreur de type E_ERROR a été causée dans la ligne 74 du fichier /home/lasympho/www/wp-content/plugins/wpshop/includes/modules/wps_customer/controller/wps_customer_admin_ctr.php. Message d’erreur : Uncaught ArgumentCountError: Too few arguments to function wps_customer_admin::save_entity_customer(), 1 passed in /home/lasympho/www/wp-includes/class-wp-hook.php on line 289 and exactly 2 expected in /home/lasympho/www/wp-content/plugins/wpshop/includes/modules/wps_customer/controller/wps_customer_admin_ctr.php:74
Stack trace:
#0 /home/lasympho/www/wp-includes/class-wp-hook.php(289): wps_customer_admin->save_entity_customer(6622)
#1 /home/lasympho/www/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#2 /home/lasympho/www/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#3 /home/lasympho/www/wp-includes/post.php(4260): do_action('save_post', 6622, Object(WP_Post), true)
#4 /home/lasympho/www/wp-includes/post.php(4354): wp_insert_post(Array, false)
#5 /home/lasympho/www/wp-includes/post.php(3209): wp_update_post(Array)
#6 /home/lasympho/www/wp-admin/edit.php(119): wp_trash_post(6622)
#7 {main}
  thrown

but the customers are deleted anyway
if I go in trash , i can not delete customers

Did you ever had this issue ??
thanks