From eeaac828d98a3b432644e7ab4722ac81b4d06716 Mon Sep 17 00:00:00 2001
From: jack1142 <6032823+jack1142@users.noreply.github.com>
Date: Mon, 26 Oct 2020 18:55:52 +0100
Subject: [PATCH] Fix `KeyError` in `[p]muteset role` (#4531)

---
 redbot/cogs/mutes/mutes.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/redbot/cogs/mutes/mutes.py b/redbot/cogs/mutes/mutes.py
index 1182f1998..06dbbf202 100644
--- a/redbot/cogs/mutes/mutes.py
+++ b/redbot/cogs/mutes/mutes.py
@@ -656,7 +656,8 @@ class Mutes(VoiceMutes, commands.Cog, metaclass=CompositeMetaClass):
         """
         if not role:
             await self.config.guild(ctx.guild).mute_role.set(None)
-            del self.mute_role_cache[ctx.guild.id]
+            if ctx.guild.id in self.mute_role_cache:
+                del self.mute_role_cache[ctx.guild.id]
             await self.config.guild(ctx.guild).sent_instructions.set(False)
             # reset this to warn users next time they may have accidentally
             # removed the mute role