My zabbix agent2 has data, but zabbix server display mysql item is not supported

[beyondpower]

My Zabbix server is 5.0 TLS, and my Zabbix agent is Zabbix agent 2 - 5.0 TLS
When I tested it on zabbix, there was data.
But when I added the template to the web page, the trigger prompted an error.
Why ?