فايرفوكس الأخير يسبب مشاكل في عنوان SSO

الدعم
4

The code is as follows, thanks in advance

I modified this Discourse sso provider login · GitHub
Link to the site using it and that has the issue in Firefox: https://vceliquidrecipes.com/

LOGIN FORM

<div class="row mt-1">
<div class="col-md-12 d-flex justify-content-center">
<p><a class="btn btn-success" href="'.$discourse_url.'/session/sso_provider?'.$query.'" role="button">Sign in</a>&nbsp;&nbsp;<a class="btn btn-success" href="https://vapingcommunity.co.uk/signup" role="button">Register</a></p>
</div>
</div>

$sso_secret = 'ITSASECRET';
$discourse_url = 'https://vapingcommunity.co.uk';

$nonce = hash('sha512', mt_rand());
$_SESSION['nonce'] = $nonce;

$payload =  base64_encode( http_build_query( array (
	'nonce' => $nonce,
	'return_sso_url' => $me
	)
) );

$request = array(
	'sso' => $payload,
	'sig' => hash_hmac('sha256', $payload, $sso_secret )
	);

$query = http_build_query($request);


if(!empty($_GET) and isset($_GET['sso'])){
	$sso_secret = 'ITSASECRET';
	if(isset($_SESSION['loggedin']) && isset($_SESSION['username']) && $_SESSION['loggedin'] == true){
		header("location: /");
		die();
	}
	
	$sso = $_GET['sso'];
	$sig = $_GET['sig'];

	if(hash_hmac('sha256', urldecode($sso), $sso_secret) !== $sig){
		header("HTTP/1.1 404 Not Found");
		die();
	}

In my controller

$sso = urldecode($sso);
$query = array();
parse_str(base64_decode($sso), $query);

$username = $query['username'];
$useremail = $query['email'];
if(!empty($query['avatar_url'])) {
	$avatar_url = $query['avatar_url'];
}
else {
	$avatar_url = $miscf->fullURL().'/images/defaultAvatar.png';
}
$userisadmin = $query['admin'];
$userismoderator = $query['moderator'];
$usergroup = $query['groups'];
$externalid = $query['external_id'];
if ($userf->checkUserEIDExists($externalid) == false) {
	$userf->addUser($username,$useremail,$avatar_url,$userisadmin,$userismoderator,$usergroup,$externalid);
}


$nonce = $_SESSION['nonce'];
if($query['nonce'] != $nonce){
    header("HTTP/1.1 404 Not Found");
    die();
}

$userf->loginUser($query['username'],$query['external_id'],$avatar_url,$query['groups']);

Login function:

*SETS COOKIE DOES OTHER MISC STUFF LIKE USER CHECKS*

*FINISHES WITH THIS*
if(isset($_SESSION['url'])) 
	   $url = $_SESSION['url']; 
	else 
	   $url = ""; 
    $miscf = new miscf();
	$fullurl = $miscf->fullURL().$url;
	header("Location:".$fullurl); 
	unset($_SESSION['url']);
    die();
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