Catalina: After some hours various things start to crash and/or stop working I have noticeg that after some hours or so, Google Chrome starts giving a crashing extensions message, and at that time everything starts acting weird.

If I try to open an application it says "Can't open X Application". Even the screenshot shortcut CMD+SHIFT+4 does not work. 

Furthermore, terminal won’t even start at this point:

[forkpty: Resource temporarily unavailable] 
[Could not create a new process and open a pseudo-tty.]


How can I troubleshoot this?
I would pick one app and troubleshoot it.


Remove chrome extensions (make a list so you can reinstall them later)
Remove Chrome
Reinstall Chrome
If it still crashes - remove it and make a new admin account (clean environment)
Reinstall Chrome when the main user is logged out and only the new user is logged in.
Pursue support with that one vendor to isolate further if the app is supported on your version of Catalina.


Apply any Apple patches that are released while you are isolating things above.