zabbix-agent.service: Can’t open PID file /run/zabbix/zabbix_agentd.pid (yet?) after start: Operation not permitted

sudo service zabbix-agent stop
sudo mkdir /var/run/zabbix
sudo touch /var/run/zabbix/zabbix_agentd.pid
sudo chown zabbix:zabbix /var/run/zabbix/zabbix_agentd.pid
sudo chmod 777 /var/run/zabbix/zabbix_agentd.pid
sudo service zabbix-agent start
sudo service zabbix-agent status