Getting randomly 520 error

I checked every single solution but its not fixed 520 error. this 520 error not always occur but some time and it shows instantly when 520 error happened and after refresh error is gone. here is one of the Ray ID: 68b4ab70b83555fb
here is the cdn cgi trace:
fl=410f147
h=dogemate.com
ip=103.39.132.190
ts=1631109701.674
visit_scheme=https
uag=Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36
colo=SIN
http=http/3
loc=IN
tls=TLSv1.3
sni=plaintext
warp=off
gateway=off

my support ticket #2249016

So as part of https://community.cloudflare.com/t/random-520-errors/ we fixed an issue with origins silently ending a keepalive connection that was causing very rare 520 errors.

Thus we recommend testing again - if you still see 520s - make sure you follow the guidance in our community tip here:

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