No saving of state in book flow examples

[pranjalrajput]

I genuinely hope that you guys stop drumming up excitement about these examples.
They dont seem to have any way of pausing/recovering from any errors after the flow is kicked off.
I naively ran the example with o1-preview model and the flow failed at last step. The API bill was $25 and nothing to show for it, except logs.
I have been weighing all the agentic frameworks. I know I am not going ahead with this one.
Going by the book example, CrewAI doesnt seem have the ability to persist state, or recover a flow from failed/interrupted state, set budget/billing limits etc.

PS: the error in book example

[Flow._execute_single_listener] Error in method write_chapters: "Key 'title' not found in CrewOutput." Traceback (most recent call last): File "/Users/pr/crewai/write_a_book_with_flows/.venv/lib/python3.12/site-packages/crewai/flow/flow.py", line 368, in _execute_single_listener listener_result = await self._execute_method(listener_name, method) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/pr/crewai/write_a_book_with_flows/.venv/lib/python3.12/site-packages/crewai/flow/flow.py", line 304, in _execute_method await method(*args, **kwargs) File "/Users/pr/crewai/write_a_book_with_flows/src/write_a_book_with_flows/main.py", line 91, in write_chapters chapters = await asyncio.gather(*tasks) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Users/pr/crewai/write_a_book_with_flows/src/write_a_book_with_flows/main.py", line 78, in write_single_chapter title = output["title"] ~~~~~~^^^^^^^^^ File "/Users/pr/crewai/write_a_book_with_flows/.venv/lib/python3.12/site-packages/crewai/crews/crew_output.py", line 50, in __getitem__ raise KeyError(f"Key '{key}' not found in CrewOutput.") KeyError: "Key 'title' not found in CrewOutput."