diff -r cbe524ed1a6a -r 2e36a54906e4 plugins/muc/mod_muc.lua
--- a/plugins/muc/mod_muc.lua	Mon Nov 25 23:51:41 2019 +0100
+++ b/plugins/muc/mod_muc.lua	Mon Nov 25 23:52:45 2019 +0100
@@ -191,7 +191,7 @@
 
 local function handle_broken_room(room, origin, stanza)
 	module:log("debug", "Returning error from broken room %s", room.jid);
-	origin.send(st.error_reply(stanza, "wait", "internal-server-error"));
+	origin.send(st.error_reply(stanza, "wait", "internal-server-error", nil, room.jid));
 	return true;
 end