installed plugins:
grafana-clock-panel @ 2.1.3
grafana-piechart-panel @ 1.6.4
grafana-worldmap-panel @ 0.3.3
alexanderzobnin-zabbix-app @ 4.4.5
briangann-gauge-panel @ 0.0.9

Restart grafana after installing plugins . <service grafana-server restart>
