Pop OS sometimes manages to mess up somehow, leaving me unable to update.
This is the usual error:
dpkg: dependency problems prevent processing triggers for libglib2.0-0:i386:
libglib2.0-0:i386 depends on libpcre3; however:
Package libpcre3:i386 is not configured yet.
Running these two commands usually fixes that:
sudo dpkg --configure -a
sudo apt --fix-broken install