From 6dc794974af2a015d575f6337adbfb08be02a0dc Mon Sep 17 00:00:00 2001
From: Ignacio Gonzalez <8524584+nchz@users.noreply.github.com>
Date: Tue, 28 Feb 2023 12:54:57 -0300
Subject: [PATCH] remove trailing comma that made assertion message a tuple
 (instead of a string).

---
 rest_framework/serializers.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rest_framework/serializers.py b/rest_framework/serializers.py
index 37b68cf58..be925d35f 100644
--- a/rest_framework/serializers.py
+++ b/rest_framework/serializers.py
@@ -1137,7 +1137,7 @@ class ModelSerializer(Serializer):
             "and is now disallowed. Add an explicit fields = '__all__' to the "
             "{serializer_class} serializer.".format(
                 serializer_class=self.__class__.__name__
-            ),
+            )
         )
 
         if fields == ALL_FIELDS: