DragonByte Tech
Well-known member
Are you sure you have updated to v5.3.0? I'm looking at the files right now, and there's absolutely no references to $this->config in the /library/DBTech/Shop/Action/Buyitem.php file. Can you please try re-downloading v5.3.0 and re-uploading the files if you have already updated?
Fillip
Fillip