Session_start(): Cannot send session cookie - headers already sent
I don't know what cause this, but I have made an admin panel that controlle my website everything work in the local host but when I have upload the website to inmotionhosting cpanel this error show in my admin panel
you can see the page here http://hiluxasia.com/admin123/sign-in.php
this is the php codes
include 'inc/db.php';
if(isset($_POST['submit_signin'])){
if(!empty($_POST['user_name']) && !empty($_POST['password'])){
$get_user_name = mysqli_real_escape_string($conn,$_POST['user_name']);
$pass = md5($_POST['password']);
$get_password = mysqli_real_escape_string($conn,$pass);
$sql = "SELECT * FROM users WHERE user_email = '$get_user_name' AND user_password = '$get_password'";
if($result = mysqli_query($conn,$sql)){
while($rows = mysqli_fetch_assoc($result)){
if(mysqli_num_rows($result) == 1){
$_SESSION['user'] = $get_user_name;
$_SESSION['password'] = $get_password;
header('Location:index.php');
} else {
header('Location:sign-in.php?login_error=wrong');
}
}
}else {
header('Location:sign-in.php?login_error=query_error');
}
} else {
header('Location:sign-in.php?login_error=empty');
}
}else {
}