Help needed with Jux Easy Mega menu

I get the following error when trying to activate Easy Mega Menu:

Warning: count(): Parameter must be an array or an object that implements Countable in C:\xampp7\htdocs\jpsport\modules\mod_jux_easy_megamenu\includes\menu\menu.php on line 119

Im running on PH 7.2 on localhost

The error refers to this section in the menu.php file
if (@$children[$id] && $level <= $maxlevel) {
foreach ($children[$id] as $v) {
$id = $v->id;
$list[$id] = $v;
$list[$id]->children = count(@$children[$id]);
$list[$id]->level = $level;
$list = $this->treerecurse($id, $list, $children, $maxlevel, $level + 1);
}
}

And seems to sprung form this update in PHP7.2
7.2.0 count() will now yield a warning on invalid countable types passed to the array_or_countable parameter.

You're assistance in matter will be highly appreciated.

I have the same php version running and there is the same problem occurring:
Warning: count(): Parameter must be an array or an object that implements Countable in modules/mod_jux_easy_megamenu/includes/menu/menu.php on line 119.

Have you a solution already?

thanks!

The warning has disappeared with this code change. Thank you.
Now that I can edit the menu I realise that the column width does not work as it should. I've added a second column to a menu item und put both of them to width 6 with the result you can see in the image.

any idea? or is this problem a known one?

Thanks for your support!

Screenshot here:
cdn.pbrd.co/images/HYOW30f.png