Cloudflare error code 520 for a month now

The website "5ch" started showing this error at the end of last month until now.
https://egg.5ch.net/test/read.cgi/applism/1680916258
I'm on a desktop pc.
Weird thing is when I'm using my phone, the page shows just fine. But when I change the page to "desktop view" it shows the exact error code 520.
People are still writing on that message board so is it because of where I live? (it's a japanese website and I don't live in japan)

Lynx•9/27/23, 11:18 AM

@Kairi52474 It is probably because of the Cookie Limits, you likely exceeded the limits of either pm2, nginx or cloudflare you can try to add the snippets right below to configuration files:

for nginx:

for pm2:

for cf you shouldn't exceed the 16kb or 8kb, not sure what was the limit, cookie size in total. As far i know you can increase this limit by purchasing enterprise plan of the cloudflare.