Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /var/www/vhosts/jswelt.de/httpdocs/inc/show_intro.inc.php:7
Stack trace:
#0 /var/www/vhosts/jswelt.de/httpdocs/inc/show_intro.inc.php(7): mysqli_num_rows()
#1 /var/www/vhosts/jswelt.de/httpdocs/inc/main.php(115): require('...')
#2 /var/www/vhosts/jswelt.de/httpdocs/index.inc.php(454): include('...')
#3 /var/www/vhosts/jswelt.de/httpdocs/index.php(186): include('...')
#4 {main}
thrown in /var/www/vhosts/jswelt.de/httpdocs/inc/show_intro.inc.php on line 7