Changed not removed empty message (photo/video/audio)

Author: tabuna

app/Services/TelegramBot.php

@@ -70,6 +70,10 @@ public function deleteMessage($chatId, $messageId): Response
      */
     public function isSpam(string $message): bool
     {
+        if (empty($message)) {
+            return false;
+        }
+
         $detector = new SpamDetector($message);
 
         return $detector->isSpam();