def METHOD_NAME(self, event: 'EvmEvent', counterparty: str) -> None:
    """
    Notify the user about a problem during the decoding of ethereum transactions. At the
    moment it doesn't take any error type but in the future it could be added if needed.
    Related issue: https://github.com/rotki/rotki/issues/4965
    """
    self.msg_aggregator.add_error(
        f'Could not identify asset {event.asset} decoding ethereum event in {counterparty}. '
        f'Make sure that it has all the required properties (name, symbol and decimals) and '
        f'try to decode the event again {event.tx_hash.hex()}.',
    )