Merge pull request #88 from gnurlan/patch-1

empty contact last_name issue fixed

Author: crynobone

src/TelegramContactDriver.php

@@ -48,11 +48,11 @@ public function loadMessages()
     {
         $message = new IncomingMessage(Contact::PATTERN, $this->event->get('from')['id'], $this->event->get('chat')['id'], $this->event);
         $message->setContact(new Contact(
-            $this->event->get('contact')['phone_number'],
-            $this->event->get('contact')['first_name'],
-            $this->event->get('contact')['last_name'],
+            $this->event->get('contact')['phone_number']??"",
+            $this->event->get('contact')['first_name']??"",
+            $this->event->get('contact')['last_name']??"",
             $this->event->get('contact')['user_id'],
-            $this->event->get('contact')['vcard']
+            $this->event->get('contact')['vcard']??""
         ));
 
         $this->messages = [$message];