ببخشید مشکل این ارور از کجاست؟؟

function getUserByEmail($email){
    global $pdo ;
    $select = "SELECT id FROM users WHERE email = :email" ;
    $stmt = $pdo->prepare($select) ;
    $stmt->execute([':email' => $email]) ;
    $records =$stmt->fetchAll(PDO::FETCH_OBJ) ;
    return $records[0] ?? null ;
}
function Login($email){
    $user = getUserByEmail($email) ;
    dd($user);
    return 1 ;
}