Failed to start File System Check on

A couple hours ago tried to start my Ubuntu laptop after a few months without using it and I found myself with this:

I'm far from understanding what's exactly happening here. Does anyone know how to troubleshoot this?

My guess for your situation would be that environmental changes have affected you HDD. So from the error message from journalctl -xb which points to file inconsistencies and the instruction to run manual file check. Use the fsck command to correct this error:

fsck /dev/sda2

And simply accept all the options give during the process. Then reboot you system.

Similar to the answer before https://askubuntu.com/a/1095536/676490

In my case helped:

sudo fsck /dev/sda1
sudo fsck /dev/sda2
sudo fsck /dev/sda3
sudo fsck /dev/sda4

And I accepted everthing with y (yes)

If you want to accept all automatically you can use ihmo the -y-flag:

sudo fsck -y /dev/sda4

or simmilar