My website requests encryption after 502

https://www.xingxingtest.com/mmfsdfs/47_109_109_102_115_100_102_115_47_52_55_95_57_55_95_49_48_54_95_57_55_95_49_50_48_95_52_55_95_49_49_54_95_49_49_52_95_57_55_95_49_49_48_95_49_49_53_95_49_48_56_95_57_55_95_49_49_54_95_49_48_49_95_57_53_95_49_48_56_95_57_55_95_49_49_48_95_49_48_51_95_49_49_55_95_57_55_95_49_48_51_95_49_48_49

Ray ID: 5ec2e65a29ce0b8b

The 502/504 errors are caused by a problem connecting to an upstream server - meaning your server is trying to initiate a process and this fails to work as expected or times out. In most cases of 502 / 504 errors, back-end servers are not communicating correctly. When this happens, you will see color page with Cloudflare branding and the Error 502 Bad Gateway or Error 504 Gateway Timeout. Review this Community Tip for fixing 502 or 504 gateway errors.