TypeError: unsupported operand type(s) for |: 'types.GenericAlias' and 'NoneType'

[bz-e]

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when I running "poetry run python src/main.py --ticker AAPL,MSFT,NVDA"
there is a bug: ai-hedge-fund\src\data\cache.py", line 11, in Cache
def _merge_data(self, existing: list[dict] | None, new_data: list[dict], key_field: str) -> list[dict]:
TypeError: unsupported operand type(s) for |: 'types.GenericAlias' and 'NoneType'ai-hedge-fund\src\data\cache.py", line 11, in Cache
def _merge_data(self, existing: list[dict] | None, new_data: list[dict], key_field: str) -> list[dict]:
TypeError: unsupported operand type(s) for |: 'types.GenericAlias' and 'NoneType'
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[bz-e]

fix: issue #176 Update python version to 3.10 #177