This is the fix for those who are using the Journal theme on OpenCart 3.x and receive PHP error on mobile devices. The full error goes like this:
Warning: count(): Parameter must be an array or an object that implements Countable in /home/usernamefolder/public_html/system/library/template/Twig/Node/Module.php on line 346
At the time of this error I was using OpenCart version 3.0.3.3 and Journal theme 3.0.46. This is the solution that fixed the error for me.
Open the Module.php file and modify the line 346 with a comment and add the next line beneath it:
#if (!count($node)) {
if (is_null($node)) {
That’s it. Small fix heals huge headaches.
