I just updated debian and upon reboot and login i get this

If you can boot into terminal session, e.g. by pressing Ctrl + Alt + F2, you can try:

sudo apt clean
sudo apt -f install
sudo apt clean
sudo apt dist-upgrade
sudo apt clean

If sudo apt -f install doesn't work properly, you can create an apt-cache folder on, e.g. your home partition, assuming this is the one with sufficient amounts of free storage.

sudo apt clean
sudo mkdir /home/apt-cache
sudo nano /etc/fstab

In the fstab you specify where this directory shall be mounted:

/home/apt-cache    /var/cache/apt/archives    none    bind    0    0

Now you copy the files in place and mount the partition:

sudo cp -r /var/cache/apt/archives/* /home/apt-cache
sudo mount -a

Nou you should be able to run the fix-installation and update commands without the errors:

sudo apt -f install
sudo apt dist-upgrade