does Avast's VPN store logs?

I was informed that all VPNs does but then again it’s a decoy of sort. But still a log is a log. I’ve read this article:

https://www.theregister.co.uk/2017/10/08/vpn_logs_helped_unmask_alleged_net_stalker_say_feds/

You can see this information here: https://www.avast.com/en-us/faq.php?article=AVKB63#idt_100