I submitted my website to Chinese Baidu spider, but it has never been successful. Both google and bing are success. The error returned is shown below, how can I solve it?
HTTP/1.1 520 Origin Error
Date: Sun, 10 May 2020 09:44:35 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
Set-Cookie: __cfduid=db6324deb798de5389eddb7990f38a1491589103874; expires=Tue, 09-Jun-20 09:44:34 GMT; path=/; domain=.oppblog.com; HttpOnly; SameSite=Lax; Secure
Cache-Control: no-store, no-cache
Expect-CT: max-age=604800, report-uri=“https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct”
Server: Cloudflare
CF-RAY: 5912b8f1089104b8-LAX
cf-request-id: 029f91eaa8000004b837888200000001