Add condition to exit

webhook.php

@@ -48,6 +48,10 @@ $decoded = json_decode($var);
 
 // Store the chat ID
 $chat_id = $decoded->{"message"}->{"chat"}->{"id"};
+if (!isset($decoded->{"message"}->{"forward_from"})){
+  exit();
+}
+
 if ($decoded->{"message"}->{"forward_from"}->{"username"} != "chtwrsbot") {
   exit();
 }