Install libcal-dav-perl by entering the following commands in the terminal:
sudo apt update sudo apt install libcal-dav-perl
Description:
CalDAV client library
Cal::DAV is a library providing the client part of the CalDAV protocol. . Cal::DAV is implemented as a very thin wrapper around HTTP::DAV and Data::ICal.
Homepage: http://search.cpan.org/dist/Cal-DAV/
Version: 0.6-3
Section: universe/perl