Hi there 👋 judging by the long error, can you tell us a little more about your server setup? Some information to list so that we can help you further troubleshoot:
- OS
- CPU
- RAM
- PHP Version
- Do you use Nginx or Apache as a web server?
I also noticed something related to CloudFlare when picking apart that error message. Looks to be a 524 error and an article that leads here. This definitely looks to be an issue with either your server setup or server resources, which you should further inspect.