Warning: Undefined variable $link in C:\Users\Administrator\OneDrive\AlexCD Backup\Dokumente\Trabajo\Web Developer\LibreriaACD\SQL\Datos Query.php on line 7
Fatal error: Uncaught TypeError: mysqli_real_escape_string(): Argument #1 ($mysql) must be of type mysqli, null given in C:\Users\Administrator\OneDrive\AlexCD Backup\Dokumente\Trabajo\Web Developer\LibreriaACD\SQL\Datos Query.php:7
Stack trace:
#0 C:\Users\Administrator\OneDrive\AlexCD Backup\Dokumente\Trabajo\Web Developer\LibreriaACD\SQL\Datos Query.php(7): mysqli_real_escape_string(NULL, 6)
#1 {main}
thrown in C:\Users\Administrator\OneDrive\AlexCD Backup\Dokumente\Trabajo\Web Developer\LibreriaACD\SQL\Datos Query.php on line 7