Grafana with cyberpanel and litespeed server

I install grafana using following commands.

sudo apt-get install -y apt-transport-https software-properties-common

wget -q -O - https://packages.grafana.com/gpg.key | sudo apt-key add -

echo "deb https://packages.grafana.com/oss/deb stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list

sudo apt-get update
sudo apt-get -y install grafana

sudo systemctl enable grafana-server

sudo systemctl start grafana-server

Also add datasources.yaml file.

This worked properly. After that I install CyberPanel. Then I add TCP Port 3000 to firewall. But now it is not loading x.x.x.x:3000 not loading. How to solve this issue?

Error message is

ERR_CONNECTION_REFUSED

When I check processing task, grafana use high CPU and Ram.

Prometheus is data source and it is working properly.

These are log file data: