cron error being returned on scheduled sms

[trustserve]

it guy sent me the following error. was trying to schedule a text out.

PHP Fatal error: Uncaught exception 'Services_Twilio_RestException' with message 'Authenticate' in /home/vhosts/openvbx.rtsl.us/public/OpenVBX/libraries/Services/Twilio.php:213 Stack trace: #0 /home/vhosts/openvbx.rtsl.us/public/OpenVBX/libraries/Services/Twilio.php(185): Services_Twilio->_processResponse(Array) #1 /home/vhosts/openvbx.rtsl.us/public/OpenVBX/libraries/Services/Twilio/ListResource.php(84): Services_Twilio->createData('/2010-04-01/Acc...', Array) #2 /home/vhosts/openvbx.rtsl.us/public/OpenVBX/libraries/Services/Twilio/Rest/SmsMessages.php(16): Services_Twilio_ListResource->_create(Array) #3 /home/vhosts/openvbx.rtsl.us/public/plugins/OpenVBX-Plugin-Outbound-master/queue.php(14): Services_Twilio_Rest_SmsMessages->create('+14193181813', '+12163246637', 'test today') #4 /home/vhosts/openvbx.rtsl.us/public/OpenVBX/controllers/hook.php(48): require('/home/vhosts/op...') #5 [internal function]: Hook->index('outbound', 'cron') #6 /home/vhosts/openvbx.rtsl.us/public/system/codeigniter/CodeIgniter.php(236): call_user_fu in /home/vhosts/openvbx.rtsl.us/public/OpenVBX/libraries/Services/Twilio.php on line 213