Install libgv-php7 by entering the following commands in the terminal:
sudo apt update sudo apt install libgv-php7
Description:
PHP7 bindings for graphviz
Graphviz is a set of graph drawing tools. See the description of the graphviz package for a full description. . This package contains the PHP7 bindings.
Homepage: https://www.graphviz.org/
Version: 2.40.1-2
Section: universe/php