Unable to remove IP address from IPv6 subnet in SolusVM after update to version 1.28.*

Symptoms 

Unable to remove IP address from IPv6 subnet in SolusVM after update to version 1.28.*:

CONFIG_TEXT: Fatal error: Uncaught TypeError: mysqli_fetch_assoc(): Argument #1 ($result) must be of type mysqli_result, bool given in /usr/local/solusvm/includes/database.php:417 Stack trace: #0 /usr/local/solusvm/includes/database.php(417): mysqli_fetch_assoc(false) #1 /usr/local/solusvm/includes/database.php(89): db_mysql->fetch_array(false) #2 /usr/local/solusvm/www/admincp/vmipv6subnetsip.php(78): db_mysql->query('SELECT * inet6a...', true) #3 {main} thrown in /usr/local/solusvm/includes/database.php on line 417

Cause

SolusVM bug #SVM-3785 which was fixed in SolusVM version 1.28.24

Resolution

Update SolusVM to the latest mainline version.