As per the subject line, davical was recently updated, but the dependent library devel/php-libawl is still using version 0.57. Davical's status report claims that version 0.60 is required.
A commit references this bug: Author: rigoletto Date: Fri Apr 12 04:42:17 UTC 2019 New revision: 498691 URL: https://svnweb.freebsd.org/changeset/ports/498691 Log: devel/php-libawl: Update to 0.60 and flavorize it. - take maintainership (three time-outs) - modify www/davical due to flavorized linawl - flavorize www/davical PR: 236649 Reported by: rearnsha <rwe@eyrie.plus.com> Reviewed by: mat Approved by: tcberner Differential Revision: https://reviews.freebsd.org/D19653 Changes: head/devel/php-libawl/Makefile head/devel/php-libawl/distinfo head/devel/php-libawl/pkg-message head/devel/php-libawl/pkg-plist head/www/davical/Makefile
Thank you. :)