Switch to FastAGI mode. Edit extensions.conf and replace AGI(agc://vicidial.php) with AGI(agi://127.0.0.1:4577/vicidial.php) . Then restart Asterisk.
: The live file is typically located in the /var/www/html/agc/ directory on your server. agc vicidial.php
The script is trying to connect to MySQL but the socket is missing or permissions are wrong. Switch to FastAGI mode
Allows agents to put a dropped call back into the dialer line. agc vicidial.php