From 62a0df69fc9d2065945396838254d3c5a1c8232d Mon Sep 17 00:00:00 2001
From: JianBo He <heeejianbo@gmail.com>
Date: Thu, 5 May 2022 10:47:59 +0800
Subject: [PATCH] fix(limiter): avoid maps:get/2 crash

---
 apps/emqx/src/emqx_listeners.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/apps/emqx/src/emqx_listeners.erl b/apps/emqx/src/emqx_listeners.erl
index afe3cec5d..fcd952696 100644
--- a/apps/emqx/src/emqx_listeners.erl
+++ b/apps/emqx/src/emqx_listeners.erl
@@ -489,7 +489,7 @@ zone(Opts) ->
     maps:get(zone, Opts, undefined).
 
 limiter(Opts) ->
-    maps:get(limiter, Opts).
+    maps:get(limiter, Opts, #{}).
 
 ssl_opts(Opts) ->
     maps:to_list(