Changed Network Adapter VMs not able to connect to the internet.

[FortunateTurtle]

I'm very new to proxmox as a whole, but after I changed the physical nic on my proxmox host post deployment and changed the /etc/network/interfaces file to match the new nic, my linux server VM that I run Pterodactyl in is unable to connect to the internet and the proxmox GUI says "No Guest Agent Configured". I'm not sure where to go from here, I would like to avoid having to remake this VM.

ip addr output below


nano etc/network/interfaces output below

 

[news]

check please $ ethtool <nic-name> if the link speed or the cable is your problem