```
32.40 | E | gui.qt.exception_window.Exception_Hook | exception caught by crash reporter
Traceback (most recent call last):
File "/home/user/wspace/electrum/electrum/gui/qt/wizard/wallet.py", line 709, in <lambda>
button.clicked.connect(lambda: Bip39RecoveryDialog(self, get_account_xpub, on_account_select))
File "/home/user/wspace/electrum/electrum/gui/qt/bip39_recovery_dialog.py", line 40, in __init__
fut = asyncio.run_coroutine_threadsafe(coro, network.asyncio_loop)
AttributeError: 'NoneType' object has no attribute 'asyncio_loop'
```
Required a much higher mental load to parse the name "convert_bip32_path_to_list_of_uint32"
than to parse "convert_bip32_strpath_to_intpath".
And we already have the ~inverse: "convert_bip32_intpath_to_strpath".
aiorpcx 0.20 changed the behaviour/API of TaskGroups.
When used as a context manager, TaskGroups no longer propagate
exceptions raised by their tasks. Instead, the calling code has
to explicitly check the results of tasks and decide whether to re-raise
any exceptions.
This is a significant change, and so this commit introduces "OldTaskGroup",
which should behave as the TaskGroup class of old aiorpcx. All existing
usages of TaskGroup are replaced with OldTaskGroup.
closes https://github.com/spesmilo/electrum/issues/7446
