du kan inte upprepa detta
echo $stmt_chk_email;
du kanske vill upprepa detta
$stmt_chk_email = $con->prepare('SELECT column1 ,column2,... FROM `user_information` WHERE `Email` = ?');
$stmt_chk_email->execute();
$stmt_chk_email->store_result();
$stmt_chk_email->bind_result($column1 ,$column2,.....);
$stmt_chk_email->fetch();
echo $column1;
echo $column2 ;
.....