Proxmox Virtual Environment 7.4-3 crash issue

[manikanta]

Please check the above snippet which I got during booting up my proxmox. How to get resolved without losing existing data.

 

[leesteken]

Maybe this (which I found using this search) will help: https://forum.proxmox.com/threads/recover-from-grub-failure-cant-find-lvm.121861/#post-529751

Your Proxmox VE is many years out of support and vulnerable to a lot of things. Please install a supported version like 9.2 and restore from backups.