update

bots/modules/ping.py

@@ -1,5 +1,4 @@
 from django.db import models
-from jsonfield import JSONField
 from telegram import Update
 from telegram.error import BadRequest
 from telegram.ext import Dispatcher, CallbackContext, CommandHandler
@@ -11,7 +10,7 @@ from bots.models import TelegramBotModuleConfig
 class PingBotCategory(models.Model):
     chat_id = models.BigIntegerField(db_index=True)
     cat_name = models.CharField(max_length=64, db_index=True)
-    user_ids = JSONField(null=True)
+    user_ids = models.JSONField(null=True)
 
     def add_user(self, uid: int):
         user_ids = set(self.user_ids or [])