old_contents: from django.core.serializers.json import DjangoJSONEncoder
  
  
  class ChamberJSONEncoder(DjangoJSONEncoder):
  
      def default(self, val):
          if isinstance(val, bytes):
              return {
                  '__type__': bytes.__name__,
                  '__value__': [x for x in val],
              }
          else:
              try:
                  return super().default(val)
              except TypeError:
                  # https://github.com/python/cpython/blob/v3.8.3/Lib/json/encoder.py#L160-L180
                  return 'Unserializable value of "{}"'.format(str(type(val)))
              except ValueError as ex:
                  # https://github.com/django/django/blob/2.2.14/django/core/serializers/json.py#L81-L104
                  return str(ex)
  
new_contents: from django.core.serializers.json import DjangoJSONEncoder
  
  
  class ChamberJSONEncoder(DjangoJSONEncoder):
  
      def default(self, val):
          try:
              return super().default(val)
          except TypeError:
              # https://github.com/python/cpython/blob/v3.8.3/Lib/json/encoder.py#L160-L180
              return 'Unserializable value of "{}"'.format(str(type(val)))
          except ValueError as ex:
              # https://github.com/django/django/blob/2.2.14/django/core/serializers/json.py#L81-L104
              return str(ex)
  
subject: Remove bytes serialization