I monitor a Linux server on which the Apache web server is installed in Zabbix using the Zabbix-Agent. From the Templates section, I added the "Apache by Zabbix agent" option, and zabbix is currently monitoring Apache web server information. But my goal was to monitor user traffic to see how many visitors I had at any given time. But "Apache: Requests per second" and "Apache: Total requests" are disabled. Please pay attention to the attached photo. Where is the problem? And how can I monitor the traffic of users visiting the site?