Traceback (most recent call last):
  File "/Users/qingyunwu/Documents/github/ag2ai/ag2/research.py", line 52, in <module>
    agent = DeepResearchAgent(
  File "/Users/qingyunwu/Documents/github/ag2ai/ag2/autogen/agents/experimental/deep_research/deep_research.py", line 44, in __init__
    self.tool = DeepResearchTool(
  File "/Users/qingyunwu/Documents/github/ag2ai/ag2/autogen/tools/experimental/deep_research/deep_research.py", line 157, in __init__
    super().__init__(
  File "/Users/qingyunwu/Documents/github/ag2ai/ag2/autogen/tools/tool.py", line 51, in __init__
    self._chat_context_param_names = get_context_params(func_or_tool, subclass=ChatContext)
  File "/Users/qingyunwu/Documents/github/ag2ai/ag2/autogen/tools/dependency_injection.py", line 116, in get_context_params
    return [p.name for p in sig.parameters.values() if _is_context_param(p, subclass=subclass)]
  File "/Users/qingyunwu/Documents/github/ag2ai/ag2/autogen/tools/dependency_injection.py", line 116, in <listcomp>
    return [p.name for p in sig.parameters.values() if _is_context_param(p, subclass=subclass)]
  File "/Users/qingyunwu/Documents/github/ag2ai/ag2/autogen/tools/dependency_injection.py", line 137, in _is_context_param
    return isinstance(param_annotation, type) and issubclass(param_annotation, subclass)
  File "/Users/qingyunwu/miniconda3/envs/ag2/lib/python3.10/abc.py", line 123, in __subclasscheck__
    return _abc_subclasscheck(cls, subclass)
TypeError: issubclass() arg 1 must be a class

if not isinstance(param.annotation, type):
        return False
        
try:
    result = issubclass(param, subclass)
    return result
except Exception as e:
    return False