Error local.ERROR: DOMDocument::loadXML():

[DendyInsan]

Hi I'm new in Laravel saml2,and I have problem when try this library. I always got error below:
local.ERROR: DOMDocument::loadXML(): Couldn't find end of Start Tag Subj line 1 in Entity, line: 1 {"exception":"[object] (ErrorException(code: 0): DOMDocument::loadXML(): Couldn't find end of Start Tag Subj line 1 in Entity, line: 1 at C:\inetpub\wwwroot\comex\vendor\onelogin\php-saml\src\Saml2\Utils.php:90)

fyi I have succeed get the Information from the IDP when I dd in the EventServiceProvider. But Always error when I want to Auth:login.
Here is My EventServiceProvider.php:

<?php

namespace App\Providers;

use Illuminate\Support\Facades\Event;
use Illuminate\Auth\Events\Registered;
use Illuminate\Auth\Listeners\SendEmailVerificationNotification;
use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;
use Aacotroneo\Saml2\Events\Saml2LoginEvent;
use  App\models\users;
class EventServiceProvider extends ServiceProvider
{
    /**
     * The event listener mappings for the application.
     *
     * @var array
     */
    protected $listen = [
        Registered::class => [
            SendEmailVerificationNotification::class,
        ],
    ];

    /**
     * Register any events for your application.
     *
     * @return void
     */
    public function boot()
    {
       parent::boot();
		Event::listen('Aacotroneo\Saml2\Events\Saml2LoginEvent', function (Saml2LoginEvent $event) {
            $messageId = $event->getSaml2Auth()->getLastMessageId();
            // Add your own code preventing reuse of a $messageId to stop replay attacks

            $user = $event->getSaml2User();
            $userData = [
                'id' => $user->getUserId(),
                'attributes' => $user->getAttributes(),
                'assertion' => $user->getRawSamlAssertion()
			
            ];

            
			 $email=$user->getAttributes()['http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name'][0];
			
            $json = json_encode($email);
            $array = json_decode($json,TRUE);
 

            $user = users::where('email',$array)->first();
              if(!$user){
                
                  return redirect('/login');
             }else{
                Auth::loginUsingId($user->id);
             }

        });
       
    }
}

I Really do not have any idea to solved this error. If you have same experience, I really appreciate if you want to share. Thanks in advance.

[DendyInsan]

Finally I found the way to fix the problem. The cause problem of local.ERROR: DOMDocument::loadXML(): is the app cannot found the url in the Route List. You have really pay attention to the url in the saml2 setting especially if you use the middleware.