Sellacious shop on localhost (Openserver / PHP_7.3 / My SQL-5.7). I was editing the main page by Sppagebuilder and the front end crashed. Message:

1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ': htmlspecialchars() expects parameter 1 to be string, array given in D:\DOWNLO' at line 6

What is written in "PHP_7.3_error.log":

PHP Notice: Undefined property: stdClass::$global_border_width in ***\OSPanel\domains\lannashop\components\com_sppagebuilder\layouts\addon\css.php on line 79

What is in "com_sppagebuilder\layouts\addon\css.php":

76 // Border
77 if(isset($addon->settings->global_user_border) && $addon->settings->global_user_border) {
78
79 if (is_object($addon->settings->global_border_width))
80 $addon_css .= isset($addon->settings->global_border_width->md) && $addon->settings->global_border_width->md ? "border-width: " . $addon->settings->global_border_width->md . "px;\n" : "";
81 } else {
82 $addon_css .= isset($addon->settings->global_border_width) && $addon->settings->global_border_width ? "border-width: " . $addon->settings->global_border_width . "px;\n" : "";
83 }

How to fix this error? I am almost zero in CSS...