### Description A PHP Fatal error occurs on Ubuntu 24.04 with PHP 8.3 when running the email quota monitor script. This is caused by PHP 8.3's stricter type handling for arithmetic operations on strings returned from `doveadm`. ### Error Log `PHP Fatal error: Uncaught TypeError: Unsupported operand types: string * int in /usr/local/ispconfig/server/lib/classes/cron.d/100-monitor_email_quota.inc.php:89` ### Affected Code File: `/usr/local/ispconfig/server/lib/classes/cron.d/100-monitor_email_quota.inc.php` Line 89: ```php $dovecotQuotaUsage[$s[0]] = $s[3] * 1024; ``` ### Proposed Fix ```php $dovecotQuotaUsage[$s[0]] = (int)$s[3] * 1024; ```