While using https://tools.keycdn.com/curl
Below is the error message, hope someone can help?
HTTP/2503
cf-cache-status: MISS
cf-ray: 68f0d6abadb14db2-FRA
content-type: text/plain; charset=utf-8
date: Wed, 15 Sep 2021 09:30:50 GMT
display: staticcontent_sol, orig_site_sol
expect-ct: max-age=604800, report-uri=“https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct”
expires: Tue, 14 Sep 2021 09:30:50 GMT
response: 521
server: nginx
vary: Accept-Encoding
vary: Origin,Accept-Encoding
x-ezoic-cdn: Miss
x-middleton-display: staticcontent_sol, orig_site_sol
x-middleton-response: 521
x-origin-cache-control: no-store, no-cache
x-sol: orig