Fatal error: Uncaught TypeError: mysqli_query(): Argument #1 ($mysql) must be of type mysqli, PDO given in /home/grupogoi/public_html/appdata/pruebas/betwen.php:21 Stack trace: #0 /home/grupogoi/public_html/appdata/pruebas/betwen.php(21): mysqli_query(Object(PDO), 'Select precio f...') #1 {main} thrown in /home/grupogoi/public_html/appdata/pruebas/betwen.php on line 21