Install libfs6-dbg by entering the following commands in the terminal:
sudo apt update sudo apt install libfs6-dbg
Description:
X11 Font Services library (debug package)
libFS, the Font Services library, provides various functions useful to X11 font servers, and clients connecting to font servers. It is not used outside of thse implementations. . This package contains the debug versions of the library found in libfs6. Non-developers likely have little use for this package. . More information about X.Org can be found at:
Version: 2:1.0.7-1
Section: libdevel