Server errors

Hello,

In my cloudways app, I didn’t get any error log, could you please clarify why I got the below message.

On September 3, 2021, your domain has encountered an unexpected increase in server errors (408, 502, 504, 520, 521, 522, 523, 524).

Top error code(s): 520
8%
Origin errors as a percent of total requests in a recent 30-day period

20%
Origin errors as a percent of total requests on
September 3, 2021

150%
Increase in
server error
rate

Please advice,