Missed requirement found

[kunansy]

from aiokeydb.serializers import SerializerType
-> aiokeydb/serializers/__init__.py:7: in <module>
from aiokeydb.serializers._pickle import PickleSerializer, DillSerializer, DillSerializerv2, PickleSerializerv2, CloudPickleSerializer
-> aiokeydb/serializers/_pickle.py:31: in <module>
class DefaultProtocols:
-> aiokeydb/serializers/_pickle.py:34: in DefaultProtocols
dill: int = dill.HIGHEST_PROTOCOL
AttributeError: type object 'object' has no attribute 'HIGHEST_PROTOCOL'

When install dill everything works