Sever Error 520

i get my sever Error 520
Ray ID: 54cb5655e99db4ba • 2019-12-29 11:12:10 UTC
but i am not sure why?

Web server is returning an unknown error

Assuming the URL is https://paste.ulvis.net/add.html it would seem to work for me, as far as not receiving that 520 is concerned. I get a 503 straight from your server.

Interestingly enough though, sitemeer.com/#https://paste.ulvis.net/add.html shows the same 503 everywhere as well, except for the Italian checkpoint.

What does your server log say about the 503s?