Install libcompfaceg1 by entering the following commands in the terminal:
sudo apt update sudo apt install libcompfaceg1
Description:
Compress/decompress images for mailheaders, libc6 runtime
Converts 48x48 .xbm format (X bitmap) files to a compressed format that can be placed in your X-Face: mail header. Some mailreaders, like exmh will then display this image when the user is reading your mail.
Version: 1:1.5.2-5build1
Section: universe/libs