From a02c75aa086d1b34958347e8c98249a8386be11f Mon Sep 17 00:00:00 2001
From: Alexey Shchepin <alexey@process-one.net>
Date: Fri, 15 Aug 2025 04:45:08 +0300
Subject: [PATCH] Add support for null values in is_canonical_json (thanks to
 snoopcatt) (#4421)

---
 src/mod_matrix_gw.erl | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mod_matrix_gw.erl b/src/mod_matrix_gw.erl
index baafd64dc..5f9705422 100644
--- a/src/mod_matrix_gw.erl
+++ b/src/mod_matrix_gw.erl
@@ -744,6 +744,8 @@ is_canonical_json(B) when is_binary(B) ->
     true;
 is_canonical_json(B) when is_boolean(B) ->
     true;
+is_canonical_json(null) ->
+    true;
 is_canonical_json(Map) when is_map(Map) ->
     maps:fold(
       fun(_K, V, true) ->