perf: 优化会话过期500问题

apps/authentication/api/mfa.py

@@ -50,7 +50,10 @@ class MFASendCodeApi(AuthMixin, CreateAPIView):
         mfa_type = serializer.validated_data['type']
 
         if not username:
-            user = self.get_user_from_session()
+            try:
+                user = self.get_user_from_session()
+            except errors.SessionEmptyError as e:
+                raise ValidationError({'error': e})
         else:
             user = self.get_user_from_db(username)