TypeError: "object of type 'NoneType' has no len()" in asyncio.base_futures in _format_callbacks

[kozlovsky]

Here:

def format_info(handle: Handle, include_stack: bool = False, stack_cut_duration: Optional[float] = None,
                limit: Optional[int] = None, enable_profiling_tip: bool = True) -> str:
    """
    Returns the representation of a task executed by asyncio, with or without the stack.
    """
    ...
    if not main_stack_tracking_is_enabled():
        stream = io.StringIO()
        task.print_stack(limit=limit, file=stream)  # <-- here

It looks like sometimes task.print_stack can crash with the task being investigated at the unfortunate moment. I think we should add a try/except block around the print_stack call to avoid it.

[sentry-for-tribler]

Sentry issue: TRIBLER-1C1

[kozlovsky]

Fixed in #7614