The official URL the bug tracker gives me does not exist, sorry. Here's the URL provided: https://github.com/linuxmint/network-manager-gnome/issues
tl18.txt
Attached is the pastebin from the error.
The official thing (I honestly don't know where to put it/Issue it sorry) is:
warning: could not find '.gnu_debugaltlink' file for /lib/x86_64-linux-gnu/libgdk-3.so.0
And it's from network-manager-gnome and I am using XFCE version of LM.