Sudden Ethernet Error

Yesterday, after finishing my installation, everything worked great in that I could connect to webui, the server, SSH, SFTP, and others could connect to the server. However, today, after booting, I cannot access anything regarding my mine-os through LAN. When I do ifconfig, no ipv4 address comes up. I am using ethernet in the same port and everything as yesterday, and only the red ethernet light is blinking (there is no green light, blinking or constant). How can I troubleshoot this connection issue?

I assume you’re using MineOS Turnkey?

If so, you should use confconsole: