Object of type 'WSGIRequest' is not JSON serializable

my code:
```

@background(schedule=60)
def g_trends(request):
	get_trends()
	return HttpResponse('hello')
```
when i run code in django and i get to my url for that function i get this error:
 **Object of type 'WSGIRequest' is not JSON serializable**
how can i fix it?
