TypeError: unsupported operand type(s) for -: 'NoneType' and 'NoneType'

[petric3]

[warrior2005]

Maybe because you have a lower version of Python. Upgrade python to 3.10 above and try again.

[petric3]

I see the problematic stock is RKT and the same error is thrown also with python3.12:

poetry run python src/main.py --ticker RKT                                                          ✔ 10:48:18 xy@r9 3.12.3
? Select your AI analysts. done (10 selections)

Selected analysts: Ben Graham, Bill Ackman, Cathie Wood, Charlie Munger, Stanley Druckenmiller, Warren Buffett, Technical Analyst, Fundamentals Analyst, Sentiment Analyst, Valuation Analyst

? Select your LLM model: [deepseek] deepseek-r1

Selected DeepSeek model: deepseek-reasoner

 ✓ Ben Graham          [RKT] Done                                                                     
 ✓ Bill Ackman         [RKT] Done                                                                     
 ✓ Cathie Wood         [RKT] Done                                                                     
 ✓ Charlie Munger      [RKT] Done                                                                     
 ✓ Fundamentals        [RKT] Done                                                                     
 ✓ Sentiment           [RKT] Done                                                                     
 ✓ Stanley Druckenmiller[RKT] Done                                                                    
 ✓ Technical Analyst   [RKT] Done                                                                     
 ⋯ Valuation           [RKT] Calculating owner earnings                                               
 ✓ Warren Buffett      [RKT] Done                                                                     
Traceback (most recent call last):
  File "/home/xyyx/ai-hedge-fund/src/main.py", line 278, in <module>
    result = run_hedge_fund(
             ^^^^^^^^^^^^^^^
  File "/home/xyyx/ai-hedge-fund/src/main.py", line 74, in run_hedge_fund
    final_state = agent.invoke(
                  ^^^^^^^^^^^^^
  File "/home/xy/.cache/pypoetry/virtualenvs/ai-hedge-fund-GerTRzSM-py3.12/lib/python3.12/site-packages/langgraph/pregel/__init__.py", line 1929, in invoke
    for chunk in self.stream(
  File "/home/xy/.cache/pypoetry/virtualenvs/ai-hedge-fund-GerTRzSM-py3.12/lib/python3.12/site-packages/langgraph/pregel/__init__.py", line 1649, in stream
    for _ in runner.tick(
  File "/home/xy/.cache/pypoetry/virtualenvs/ai-hedge-fund-GerTRzSM-py3.12/lib/python3.12/site-packages/langgraph/pregel/runner.py", line 160, in tick
    _panic_or_proceed(
  File "/home/xy/.cache/pypoetry/virtualenvs/ai-hedge-fund-GerTRzSM-py3.12/lib/python3.12/site-packages/langgraph/pregel/runner.py", line 370, in _panic_or_proceed
    raise exc
  File "/home/xy/.cache/pypoetry/virtualenvs/ai-hedge-fund-GerTRzSM-py3.12/lib/python3.12/site-packages/langgraph/pregel/executor.py", line 70, in done
    task.result()
  File "/usr/lib/python3.12/concurrent/futures/_base.py", line 449, in result
    return self.__get_result()
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/concurrent/futures/_base.py", line 401, in __get_result
    raise self._exception
  File "/usr/lib/python3.12/concurrent/futures/thread.py", line 58, in run
    result = self.fn(*self.args, **self.kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/xy/.cache/pypoetry/virtualenvs/ai-hedge-fund-GerTRzSM-py3.12/lib/python3.12/site-packages/langgraph/pregel/retry.py", line 44, in run_with_retry
    task.proc.invoke(task.input, config)
  File "/home/xy/.cache/pypoetry/virtualenvs/ai-hedge-fund-GerTRzSM-py3.12/lib/python3.12/site-packages/langgraph/utils/runnable.py", line 410, in invoke
    input = context.run(step.invoke, input, config, **kwargs)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/xy/.cache/pypoetry/virtualenvs/ai-hedge-fund-GerTRzSM-py3.12/lib/python3.12/site-packages/langgraph/utils/runnable.py", line 184, in invoke
    ret = context.run(self.func, input, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/xyyx/ai-hedge-fund/src/agents/valuation.py", line 63, in valuation_agent
    working_capital_change = current_financial_line_item.working_capital - previous_financial_line_item.working_capital
                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
TypeError: unsupported operand type(s) for -: 'NoneType' and 'NoneType'

[mitchchauvin]

I see the same issue with ticker BRK.B.

Python version: 3.12.3 (main, Jan 17 2025, 18:03:48) [GCC 13.3.0]

[Rizal4it]

I see the same issue

Python version: 3.12.3