Install libcgraph6 by entering the following commands in the terminal:
sudo apt update sudo apt install libcgraph6
Description:
rich set of graph drawing tools - cgraph library
Graphviz is a set of graph drawing tools. See the description of the graphviz package for a full description. . This package contains the cgraph library.
Homepage: https://www.graphviz.org/
Version: 2.40.1-2
Section: universe/libs