Install xfonts-x3270-misc by entering the following commands in the terminal:
sudo apt update sudo apt install xfonts-x3270-misc
Description:
Font files for the x3270(1) IBM 3270 emulator
x3270-fonts provides only the fonts required for x3270 operation, so that the fonts may be installed separately on a font-server.
Homepage: http://x3270.bgp.nu/
Version: 3.6ga4-3
Section: universe/x11