Getting a 524 Error - What's Causing It and How Can I Fix It? or Why Am I Seeing a 524 Error and How

Yo, 524 errors can happen if your origin server’s firewall blocks Cloudflare’s IPs.

Check your server’s firewall logs or whitelist Cloudflare’s IP ranges: https://www.cloudflare.com/ips/.

Also, if you’re on WordPress, a corrupted .user.ini file caused mine once. Deleted it and fixed.