[horde] whups-mail-filter driver issue

[Alonzo Shivers]

I'm trying to use whups-mail-driver, and I'm getting a driver error that
I'm not sure how to fix.

/usr/bin/whups-mail-filter --mail-user [email redacted] --mail-pass
[password redacted] --queue-id 1 --mail-host [host redacted]

Broadcast message from systemd-journald at lxubns01 (Fri 2018-04-13 17:48:32
EDT):

HORDE[7619]: No such backend "" found [pid 7619 on line 1679 of
"/usr/share/php/Horde/Registry.php"]



  Fatal
Error:
  No such backend ""
found
  In /var/www/horde/whups/lib/Factory/Driver.php on line
46


  1. Horde_Registry::appInit()
/usr/bin/whups-mail-filter:74
  2. Horde_Registry->pushApp()
/usr/share/php/Horde/Registry.php:298
  3. Horde_Registry->_pushAppError()
/usr/share/php/Horde/Registry.php:1640
  4. Horde_Registry::appInit()
/usr/bin/whups-mail-filter:74
  5. Horde_Registry->pushApp()
/usr/share/php/Horde/Registry.php:298
  6. Horde_Registry->callAppMethod()
/usr/share/php/Horde/Registry.php:1635
  7.
Horde_Registry_Application->init()

/usr/share/php/Horde/Registry.php:1197
  8.
Whups_Application->_init()

/usr/share/php/Horde/Registry/Application.php:117
  9.
Whups_Factory_Driver->create()
     /var/www/horde/whups/lib/Application.php:49