Install libfm-gtk4 by entering the following commands in the terminal:
sudo apt update sudo apt install libfm-gtk4
Description:
file management support (GTK+ 2.0 GUI library)
LibFM provides file management functions built on top of Glib/GIO giving a convenient higher-level API. . This package contains the GTK+ version 2.0 GUI.
Homepage: http://pcmanfm.sourceforge.net/
Version: 1.2.5-1ubuntu1
Section: universe/libs