Hello, thanks for answer. Why are you posting this to everyone that you need to download everything? How it's possible that Github may make a mistake without downloading the entire file? I was manually creating PHP files it's still didn't work, about 10 people did full download and someone with manually, everyone was getting same error. Finally, we examined prepare_payment.php and there are missing some libaries, we fixed it with adding 3 lines of it and started working, but still a lot of bug like when you cancel the order and return to website, you still "Purchase" a packet and get flags in server.
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