Hello,
Thanks for your reply, and maybe your right, anyway, let me share the following information for further analysis:
Yes, 502 error, Please check:https://prntscr.com/qlvv5q
it can be reproduced upon activation, or click the “Multiple package” tab: https://prntscr.com/qlw3x6
Almost everytime I can reproduce the error, and I enabled debug, and I found this:
https://prntscr.com/qlvyrl
Only these plugins are activated:
https://prntscr.com/qlw58o
As to the reason, yeah, maybe DNS servers or cache system, so I tried to disable redis cache, still reproduced the error, and I am quite confused why only this plugin cause this issue.
Maybe it is caused by DNS setting, and here is a screenshot of NS setting:
https://prntscr.com/qlwjsq
It would great appreciated if you would like to share any experience setting on DNS setting, thanks in advance.
Have a nice day.