Linux mint, screen wont wake upp from sleeping

Hi! i followed a guide i found and opened up the terminal after restarting by forcing with the powerbutton. But i do not understand what the data is telling me.

Here is the command i wrote:journalctl -rb-1 | nc termbin.com 9999

And here is the generated URL: https://termbin.com/9nxt

Would somone please explain what the command does, what the url info contains, and how to use such info to debug?