Fatal error: Uncaught TypeError: mysqli_set_charset(): Argument #1 ($mysql) must be of type mysqli, string given in /var/www/api.customercare.lu/www/smsgate.php:11
Stack trace:
#0 /var/www/api.customercare.lu/www/smsgate.php(11): mysqli_set_charset()
#1 {main}
thrown in /var/www/api.customercare.lu/www/smsgate.php on line 11