Не удается отследить причину ошибки djongo.sql2mongo.MigrationError

Question

I was executing an api (using GET method) of mine  that has been 
created using Django rest framework. 
http://127.0.0.1:8000/api/v1/savedata

Previously it was returning JSON records.When I'm executing this  api end point  its throwing  error => djongo.sql2mongo.MigrationError: tweet_location.

Обратите внимание, что tweet_location - это поле, которое я определил позже в моей модели. Также обратите внимание, что я использую MongoDB и соединитель Djongo для подключения MongoDb из Django rest framework.

/*** view code **/
class TwitterdashappViewSet(viewsets.ModelViewSet):
    #queryset = TwitterMaster.objects.all()
    permission_classes = [permissions.AllowAny]
    serializer_class = TwitterdashappSerializer 

    def get_queryset(self):
        queryset = TwitterMaster.objects.all()  
        tt = self.request.query_params.get('tt')        
        if tt:
            condition = Q(tweet_text__contains=tt)&Q(tweet_favorite_count=13)
            queryset = queryset.filter(condition)
        return queryset

   def create(self, request, *args, **kwargs):
     serializer = TwitterdashappSerializer(data=request.data)
     serializer.is_valid(raise_exception=True)
     serializer.save()
     return Response(serializer.data)

/**** Model File ***/
class TwitterMaster(models.Model):
tweet_text = models.TextField(blank=True, null=True)
tweet_favorite_count = models.CharField(blank=True, null=True)
tweet_location = models.TextField(blank=True, null=True)    
class Meta:
    db_table = "twitterdashapp_twittermaster"

/** Serializer code */
class TwitterdashappSerializer(serializers.Serializer):
tweet_text = serializers.JSONField()
tweet_favorite_count = serializers.JSONField()
tweet_location = serializers.JSONField()

def create(self, validated_data):
    instance = TwitterMaster.objects.create(**validated_data)
    return instance