AttributeError 'tuple' object has no attribute 'values' django rest framework

Your serializer needs to use a nested Meta class to declare model and fields (you were declaring them as normal attributes of the class instead of nesting them):

class SiteInfoSerializer(serializers.ModelSerializer):
    class Meta:
        model = SiteInfo
        fields = ('site_id', 'site_name', 'latitude', 'longitude')

by adding (class Meta) in serializers.py the error can get solved as per my error which i were getting.

the image which shows code of serializers.py