server reboot

Hi Guys, We are noticing random server reboots and there is nothing found in the logs. The following are the Only PROXMOX errors in logs before reboot. ----- Apr 22 05:21:24 cav-cwh-node3 pmxcfs[4095]: [status] crit: cpg_send_message failed: 9 Apr 22 05:21:24 cav-cwh-node3 pmxcfs[4095]...