Warning: Undefined array key "BD" in C:\xampp\htdocs\AmericanBurguer\controllers\ventas\datos.php on line 9

Fatal error: Uncaught PDOException: SQLSTATE[42000]: Syntax error or access violation: 1103 Incorrect table name '' in C:\xampp\htdocs\AmericanBurguer\controllers\ventas\datos.php:16 Stack trace: #0 C:\xampp\htdocs\AmericanBurguer\controllers\ventas\datos.php(16): PDO->query('SELECT * FROM `...') #1 {main} thrown in C:\xampp\htdocs\AmericanBurguer\controllers\ventas\datos.php on line 16