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The problem isn’t return JsonResponse({'status': '1'}).
The traceback is showing you that the error occurs when Django tries to save the Django session.
You must be doing something like this in the view:
request.session['my_key'] = b'bytes'
For that example, you would have to decode the bytes object (or use a string instead):
request.session['my_key'] = b'bytes'.decode('utf-8')
Source:stackexchange.com