Eva: InvalidStateError after the most latest refactoring

[drew2a]

self = <accdfl.util.eva.transfer.outgoing.OutgoingTransfer object at 0x12192c760>

    def finish(self, *, result: Optional[TransferResult] = None, exception: Optional[TransferException] = None):
        if self.finished:
            return
    
        if exception:
            self.logger.warning(f'Finish with exception: {exception.__class__.__name__}: {exception}|Peer: {self.peer}')
            self.future.set_exception(exception)
    
            # To prevent "Future exception was never retrieved" error when the future is not used
            self.future.exception()
    
            if self.on_error:
                asyncio.create_task(self.on_error(self.peer, exception))
    
        if result:
            self.logger.debug(f'Finish with result: {result}')
>           self.future.set_result(result)
E           asyncio.exceptions.InvalidStateError: invalid state

../../util/eva/transfer/base.py:59: InvalidStateError