Install libhash-multivalue-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libhash-multivalue-perl
Description:
module for storing multiple values per key in a hash
Hash::MultiValue is a Perl module that provides an object (and a plain hash reference) that may contain multiple values per key. The hash behaves like a single-value hash reference, but also provides an API to retrieve multiple values explicitly on demand.
Homepage: https://metacpan.org/release/Hash-MultiValue
Version: 0.16-1
Section: universe/perl