The configuration is centos nginx php
The network is requested in the way of http2. When encountering a problem when loading a relatively slow query page, the following problems will occur

I checked the nginx log and it was normal, but why did the access error occur? Is it because the nginx configuration file request is low or the php-fpm configuration file request is low? How to troubleshoot?

[23/May/2017:09:37:53 +0800] "GET /wp-admin/admin.php?page=ju-taskadmin-over HTTP/2.0" 200 0 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36" -

It shouldn’t be a certificate problem. Only two pages are like this. These two pages are loading very heavily and this happens. Other pages are normal. Are there any other possibilities? Could it be caused by insufficient parameters set in the configuration file