type definition for _ErrorLog missing

[svniemeijer]

I am using an error reporting approach similar to Example #1 on this page:

        except etree.DocumentInvalid as exc:
            for error in exc.error_log:
                logger.error(f"{error.filename}:{error.line}: {error.message}")

However, this gives:

error: "_ErrorLog" has no attribute "__iter__" (not iterable)  [attr-defined]