Disable in groups

bot.py

@@ -101,6 +101,8 @@ def post(bot, update, db):
         tag = (chat_id == user_id)
         send_stats(bot, update, db, tag)
         return
+    if chat_id < 0:
+        return
     if chat_id in config.allowed_users:
         callback_id = get_callback_id(db)
         photo = update.message.photo[0]