While running docker for scraping/splash, I kept getting notification of "Empty Trash" which indicated that the disk was out of space.
After few seconds,GUI got stuck. I powered of the laptop from power button.
Then on startup, I got message like this
Started GNOME display manager... and deal with any system changes..p link was shut down.....
So I tried this which results in this
As the image is showing, again, I also tried to clean up using this answer, but got no result.
Update
My hard drives look like this
/dev/sda4
is 100% used. You will need to free up hard drive space by deleting any unneeded large files. I'm not sure exactly what you were running via docker, but perhaps that created a large number of files that can be deleted. – Adam Dec 12 '20 at 20:43