fix

main.py

@@ -92,6 +92,9 @@ class PendingUser:
 
         await self.update_captcha()
 
+        if self.user_id not in pending[self.peer_id]:
+            return
+
         self.text = f"Welcome, {get_link_to_user(event.user)}! Please write a message with the **four latin letters (case insensitive)** that appear in this image to verify that you are a human. If you don't solve the captcha in **{CAPTCHA_WAIT_TIME}** seconds, you will be automatically kicked out of the group."
 
         message = await bot.send_message(