请教关于zabbix5.4定时报表的问题

我在centos8.4 上搭建了zabbix5.4 在配置定时报告的时候，可以正常发送邮件到指定邮箱，但有一个问题如下图：

提示内容：
nginx error!

The page you are looking for is not found.
Website Administrator
Something has triggered missing webpage on your website. This is the default 404 error page for nginx that is distributed with Red Hat Enterprise Linux. It is located /usr/share/nginx/html/404.html
You should customize this error page for your own site or edit the error_page directive in the nginx configuration file /etc/nginx/nginx.conf.
For information on Red Hat Enterprise Linux, please visit the Red Hat, Inc. website. The documentation for Red Hat Enterprise Linux is

我改如何解决这个问题，谢谢！