[RCU] problem with the carddav plugin

[David Mehler]

Hello,

I'm running the latest roundcube stable. I am having an issue with the
carddav plugin. When I load it and restart apache to resource the
roundcube I am seeing this in the roundcube/logs/errors file:

[04-Apr-2018 12:40:32 America/New_York] PHP Warning:
dns_get_record(): DNS Query failed in
/usr/local/www/roundcube/plugins/carddav/carddav_discovery.php on line
207
[04-Apr-2018 12:40:32 America/New_York] PHP Warning: usort() expects
parameter 1 to be array, boolean given in
/usr/local/www/roundcube/plugins/carddav/carddav_discovery.php on line
220
[04-Apr-2018 12:40:32 America/New_York] PHP Warning: Invalid argument
supplied for foreach() in
/usr/local/www/roundcube/plugins/carddav/carddav_discovery.php on line
224
[04-Apr-2018 12:40:32 America/New_York] PHP Warning:
dns_get_record(): DNS Query failed in
/usr/local/www/roundcube/plugins/carddav/carddav_discovery.php on line
252
[04-Apr-2018 12:40:32 America/New_York] PHP Warning: Invalid argument
supplied for foreach() in
/usr/local/www/roundcube/plugins/carddav/carddav_discovery.php on line
253
[04-Apr-2018 12:40:32 America/New_York] PHP Fatal error: Call to
undefined function raise_error() in
/usr/local/www/roundcube/plugins/recipient_to_contact/recipient_to_contact.php
on line 61


I have not altered carddav_discovery.php in any way.

If anyone has a fix i'd love to know it.

Thanks.
Dave.