Hello,

I'm trying to run carddav on my roundcube 1.3.6, recently updated. Whenever I enable the carddav plugin I see two separate errors in my errors log file, the first 5 lines refer to carddav, the sixth line refers to an issue maybe related maybe not about a Php security check failed.

Any insights on either of these issues appreciated.

[14-Apr-2018 11:28:44 America/New_York] PHP Warning: dns_get_record(): DNS Query failed in /usr/local/www/roundcube/plugins/carddav/carddav_discovery.php on line 207 [14-Apr-2018 11:28:44 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 [14-Apr-2018 11:28:44 America/New_York] PHP Warning: Invalid argument supplied for foreach() in /usr/local/www/roundcube/plugins/carddav/carddav_discovery.php on line 224 [14-Apr-2018 11:28:44 America/New_York] PHP Warning: dns_get_record(): DNS Query failed in /usr/local/www/roundcube/plugins/carddav/carddav_discovery.php on line 252 [14-Apr-2018 11:28:44 America/New_York] PHP Warning: Invalid argument supplied for foreach() in /usr/local/www/roundcube/plugins/carddav/carddav_discovery.php on line 253 [14-Apr-2018 11:30:24 -0400]: PHP Error: Request security check failed (POST /?_task=settings&_action=refresh)

Thanks. Dave.