Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, null given in /htdocs/sd/salon2023/inc/functions_main.php:90 Stack trace: #0 /htdocs/sd/salon2023/inc/functions_main.php(90): mysqli_query(NULL, 'update videos s...') #1 /htdocs/sd/salon2023/controllers/videos.php(13): cptr('videos', '50') #2 /htdocs/sd/salon2023/index.php(293): include('/htdocs/sd/salo...') #3 {main} thrown in /htdocs/sd/salon2023/inc/functions_main.php on line 90