Fatal error: Uncaught TypeError: mysqli_free_result(): Argument #1 ($result) must be of type mysqli_result, bool given in /var/www/vhosts/ctw/include/dblayer/mysqli.php:228 Stack trace: #0 /var/www/vhosts/ctw/include/dblayer/mysqli.php(228): mysqli_free_result() #1 /var/www/vhosts/ctw/footer.php(130): DBLayer->close() #2 /var/www/vhosts/ctw/register.php(470): require('...') #3 {main} thrown in /var/www/vhosts/ctw/include/dblayer/mysqli.php on line 228