From a9cca84595dc1e8372c75969feadfbc7138a0af5 Mon Sep 17 00:00:00 2001
From: Zaiming Shi <zmstone@gmail.com>
Date: Fri, 3 Sep 2021 23:24:37 +0200
Subject: [PATCH] fix(emqx_schema): allow listener to be null

---
 apps/emqx/src/emqx_schema.erl | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/apps/emqx/src/emqx_schema.erl b/apps/emqx/src/emqx_schema.erl
index 01989c5a1..0c9f19d79 100644
--- a/apps/emqx/src/emqx_schema.erl
+++ b/apps/emqx/src/emqx_schema.erl
@@ -377,26 +377,31 @@ fields("listeners") ->
     [ {"tcp",
        sc(ref("tcp_listeners"),
           #{ desc => "TCP listeners"
+           , nullable => {true, recursive}
            })
       }
     , {"ssl",
        sc(ref("ssl_listeners"),
           #{ desc => "SSL listeners"
+           , nullable => {true, recursive}
            })
       }
     , {"ws",
        sc(ref("ws_listeners"),
           #{ desc => "HTTP websocket listeners"
+           , nullable => {true, recursive}
            })
       }
     , {"wss",
        sc(ref("wss_listeners"),
           #{ desc => "HTTPS websocket listeners"
+           , nullable => {true, recursive}
            })
       }
     , {"quic",
        sc(ref("quic_listeners"),
           #{ desc => "QUIC listeners"
+           , nullable => {true, recursive}
            })
       }
     ];