修复了一些可能影响生产的问题

config/views.py

@@ -1,6 +1,5 @@
 import io
 import os
-import json
 import re
 import time
 import random
@@ -11,7 +10,7 @@ import urllib.parse
 from decimal import Decimal, InvalidOperation
 
 from django.conf import settings
-from django.db import models, transaction, connection
+from django.db import transaction, connection
 from django.db.models import Q, F, Max, Prefetch
 from django.core.cache import cache
 from django.core.paginator import Paginator