uv run main.py 
Traceback (most recent call last):
  File "/home/iamneo/personal-projects/openmem/main.py", line 3, in <module>
    from openmemory.client import Memory
  File "/home/iamneo/personal-projects/openmem/.venv/lib/python3.12/site-packages/openmemory/__init__.py", line 3, in <module>
    from . import connectors as sources
  File "/home/iamneo/personal-projects/openmem/.venv/lib/python3.12/site-packages/openmemory/connectors/__init__.py", line 5, in <module>
    from .langchain import OpenMemoryChatMessageHistory, OpenMemoryRetriever
  File "/home/iamneo/personal-projects/openmem/.venv/lib/python3.12/site-packages/openmemory/connectors/langchain.py", line 14, in <module>
    class OpenMemoryChatMessageHistory(BaseChatMessageHistory):
  File "/home/iamneo/personal-projects/openmem/.venv/lib/python3.12/site-packages/openmemory/connectors/langchain.py", line 21, in OpenMemoryChatMessageHistory
    def messages(self) -> List[BaseMessage]:
                               ^^^^^^^^^^^
NameError: name 'BaseMessage' is not defined