iOS Notification issue and no error - php

Question

I have an app built with cordova and pushplugin, i receive the token from the device then i try to send a notification using a php server with the following code:
require_once 'ApnsPHP/Autoload.php';
// Instantiate a new ApnsPHP_Push object
$push = new ApnsPHP_Push(
ApnsPHP_Abstract::ENVIRONMENT_SANDBOX,
'server_certificates.pem'
);
// Set the Root Certificate Autority to verify the Apple remote peer
$push->setRootCertificationAuthority('entrust_root_certification_authority.pem');
// Connect to the Apple Push Notification Service
$push->connect();
// Instantiate a new Message with a single recipient
$message = new ApnsPHP_Message($regid);
// Set a simple welcome text
$message->setText("GELLLOOOOOO !! ");
// Play the default sound
$message->setSound();
// Add the message to the message queue
$push->add($message);
$push->send();
$push->disconnect();
$err = $push->getErrors() ;
echo "<pre>". var_dump($err) . "</pre>" ;
die("{}") ;
this code return no error in $err variable, I have absolutly no clue why this isn't working because it was working fine for a little moment i was able to get notifications on the device with the same code and same certificates and then it just decided to not work anymore.