Install libhtml-tidy-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libhtml-tidy-perl
Description:
module for (X)HTML validation
HTML::Tidy is a Perl module useful for performing cleanup and providing basic validation of input. It is based on Perl bindings to the HTML Tidy Project, also known as libtidy; for details, see:
Homepage: https://metacpan.org/release/HTML-Tidy
Version: 1.60-1
Section: universe/perl