From d58eb5294448ea2d2044bcdd511f5be05bfad698 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Fri, 7 Feb 2020 17:36:35 +0200
Subject: [PATCH] Fix ignore_incoming_bot_events check in channels

Fixes #417
---
 mautrix_telegram/abstract_user.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mautrix_telegram/abstract_user.py b/mautrix_telegram/abstract_user.py
index db12ebea..e04582e0 100644
--- a/mautrix_telegram/abstract_user.py
+++ b/mautrix_telegram/abstract_user.py
@@ -421,7 +421,8 @@ class AbstractUser(ABC):
                                f" in unbridged chat {portal.tgid_log}")
                 return
 
-        if self.ignore_incoming_bot_events and self.relaybot and sender.id == self.relaybot.tgid:
+        if ((self.ignore_incoming_bot_events and self.relaybot
+             and sender and sender.id == self.relaybot.tgid)):
             self.log.debug(f"Ignoring relaybot-sent message %s to %s", update.id, portal.tgid_log)
             return