Merge pull request 'Added reaction channel null check #318' (#319) from #318 into 1.1.0

Reviewed-on: sh-edraft.de/kd_discord_bot#319

kdb-bot/src/modules/base/helper/base_reaction_handler.py

@@ -47,6 +47,10 @@ class BaseReactionHandler:
                 log_msg += f" with {payload.emoji.name}"
             try:
                 channel = guild.get_channel(payload.channel_id)
+                if channel is None:
+                    self._logger.warn(__name__, f"Channel not found")
+                    return
+
                 message = await channel.fetch_message(payload.message_id)
                 self._logger.info(
                     __name__,