Automation tasks are not running

Automation tasks stopped running. This happened after an error regarding the end of free disk space, the system did not work after a while, then resumed work, but all automation tasks stopped being performed, as well as sending SMS, mail and integration with Asterisk telephony. Errors that appeared: Uncaught ConnectionManager_Exception: No query result to fetch in /var/www/newalphademocrm/web1/web/packages/ConnectionManager/ConnectionManager_MySQLi.class.php:324 Probably ran out of disk space Uncaught ConnectionManager_Exception: Cannot connect to database: Connection refused in /var/www/newalphademocrm/web1/web/packages/ConnectionManager/ConnectionManager_MySQLi.class.php:54 Probably out of disk space