Upgrade to Django 3.2

chat_box/migrations/0010_auto_20221028_0300.py

@@ -6,13 +6,13 @@ from django.db import migrations
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('judge', '0135_auto_20221028_0300'),
-        ('chat_box', '0009_auto_20220618_1452'),
+        ("judge", "0135_auto_20221028_0300"),
+        ("chat_box", "0009_auto_20220618_1452"),
     ]
 
     operations = [
         migrations.AlterUniqueTogether(
-            name='userroom',
-            unique_together={('user', 'room')},
+            name="userroom",
+            unique_together={("user", "room")},
         ),
     ]

chat_box/models.py

@@ -42,7 +42,6 @@ class Message(models.Model):
         super(Message, self).save(*args, **kwargs)
 
     class Meta:
-        app_label = "chat_box"
         verbose_name = "message"
         verbose_name_plural = "messages"
         ordering = ("-time",)