From d0e8e8b2d179bf3895322eb83b28f542f0e1f242 Mon Sep 17 00:00:00 2001
From: "zhenyu (Eric) Liu" <102937168+ericinfins@users.noreply.github.com>
Date: Thu, 19 Jan 2023 11:11:51 +1100
Subject: [PATCH] Update utils.py

Fix the error:  TypeError: object of type 'NoneType' has no len()
---
 rest_framework_json_api/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rest_framework_json_api/utils.py b/rest_framework_json_api/utils.py
index c9114128..d67422ee 100644
--- a/rest_framework_json_api/utils.py
+++ b/rest_framework_json_api/utils.py
@@ -461,6 +461,6 @@ def format_error_object(message, pointer, response):
 
 
 def format_errors(data):
-    if len(data) > 1 and isinstance(data, list):
+    if isinstance(data, list) and len(data) > 1:
         data.sort(key=lambda x: x.get("source", {}).get("pointer", ""))
     return {"errors": data}