"Unable to download updates: The following packages have unmet dependencies:"

[ryo]

Code:

alias appupdate = "sudo apt update && sudo apt upgrade && sudo apt autoremove"

As per this blog post it should be:

Code:

sudo apt update
sudo apt dist-upgrade
sudo apt autoremove

But I also saw and performed these ones, from their Troubleshooting page:

Code:

sudo apt-get install packagekit-tools
sudo pkcon repair
sudo pkcon get-updates
sudo pkcon update

My experience with Debian for more than 2 decades has proven me that you should be careful with "dist-upgrade", it can potentially break the OS since it installs literally every single update (even if it's conflicting for example), which is why I prefer to recommend "upgrade" instead.
I generally only use "dist-upgrade" when upgrading to the latest or next Debian release.

For this drop into the terminal King’s Cross (also called kgx, it has a subway logo).

Good to know it represents a metro, didn't even know that.