TargetClosedError on search graph scraper.

[dejoma]

Describe the bug

future: <Future finished exception=TargetClosedError('Target page, context or browser has been closed')>
Traceback (most recent call last):
  File "/Users/dejoma/Work/pipelines/.venv/lib/python3.12/site-packages/playwright/_impl/_connection.py", line 518, in wrap_api_call
    return await cb()
           ^^^^^^^^^^
  File "/Users/dejoma/Work/pipelines/.venv/lib/python3.12/site-packages/playwright/_impl/_connection.py", line 85, in inner_send
    callback = self._connection._send_message_to_server(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/dejoma/Work/pipelines/.venv/lib/python3.12/site-packages/playwright/_impl/_connection.py", line 322, in _send_message_to_server
    raise self._closed_error
playwright._impl._errors.TargetClosedError: Target page, context or browser has been closed
Attempt 2 failed: 
Future exception was never retrieved
future: <Future finished exception=TargetClosedError('Target page, context or browser has been closed')>
Traceback (most recent call last):
  File "/Users/dejoma/Work/pipelines/.venv/lib/python3.12/site-packages/playwright/_impl/_connection.py", line 518, in wrap_api_call
    return await cb()
           ^^^^^^^^^^

Code

SCRAPE_CONFIG = {
    "llm": {
        "api_key": os.environ["TOGETHER_API_KEY"],
        "model": "togetherai/meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo",
    },
    "verbose": False,
    "headless": True,
    "max_results": 5,
    "search_engine": "duckduckgo",
}
scraper = SearchGraph(prompt=prompt, config=SCRAPE_CONFIG, schema=TocScraperOutput)  # type: ignore
try:
    scrape_results = scraper.run()
    ...

P.S. also there's another bug in the model_tokens.py somewhere I believe:

Model togetherai/meta-llama/Meta-Llama-3.1-70B-Instruct-Turbo not found,
                    using default token size (8192)

so the model is not found in there (max size is 200K); but it still uses the model anyway.

Additional context
Im pretty confident on the search_engine not being related to this, I also had this with the default settings.