Sometimes my web site gots error 522 so the visitors has to refresh the pages and then it works normally. Btw, we experience this in the incognito modes of the browsers (Firefox, chrome etc …). So please help me i dont have any idea how can i fix this.
I have modsecurity and CSF as firewall on contabo vps, I also added Cloudflare’s ip addresses to CSF whitelist.
I also checked the topic but it did not help me…