Hi! Today after upgrading from 4.40-2 to 4.48-1 I had this issue one more time (where I was unable to open any terminal; message was "urxvt: unable to load base fontset, please specify a valid one using -fn, aborting.")
I had to manually run "xset fp rehash" again. Now I am unsure if "xset fp rehash" needs to be called in some other step while upgrading/installing xfonts-terminus or if there is another kind of issue somewhere else. Thank you! Best regards, Nelson