crash in Ubuntu GNU/Linux

this is the first time in many years of my GNU/Linux journey that I saw a BSOD. on my office machine BTW. personal machine has never crashed even once.
the crash was due to 100% RAM and swap usage.

image description:
a mobile-clicked photo of a laptop screen. the background is full black with a sad computer image in the middle. the text below it reads: "Oh no! something has gone wrong. A problem has occurred and the system can't recover. Please log out and try again."
just below it is a small button with the text "log out"