do I misuse this package?

[jfongattw]

After tring the latest version(Feb 17, 2019), I get the following two errors. Do I access them correctly?

Thank you:-)

Microsoft Windows [版本 6.0.6001]
Copyright (c) 2006 Microsoft Corporation. All rights reserved.

D:\Works\Python\cmsis-svd-master\python>py
Python 3.4.4 (v3.4.4:737efcadf5a6, Dec 20 2015, 19:28:18) [MSC v.1600 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.

import cmsis_svd
from cmsis_svd.parser import SVDParser
parser = SVDParser.for_packaged_svd('Atmel', 'ATSAMV71J19B.svd')
for peripheral in parser.get_device().peripherals:
... for reg in peripheral.registers:
... print(reg.name, reg.address_offset)
...
ACC_CR 0
ACC_MR 4
ACC_IER 36
ACC_IDR 40
ACC_IMR 44
ACC_ISR 48
ACC_ACR 148
ACC_WPMR 228
ACC_WPSR 232
ACC_VER 252
Traceback (most recent call last):
File "", line 2, in
File "D:\Works\Python\cmsis-svd-master\python\cmsis_svd\model.py", line 505, in registers
regs.extend(arr.registers)
File "D:\Works\Python\cmsis-svd-master\python\cmsis_svd\model.py", line 207, in registers
name=self.name % self.dim_indices[i],
TypeError: not all arguments converted during string formatting

For device ('NXP', 'LPC178x_7x.svd'), there is another type of error:
...
...
RXBITRATE 44
TXMODE 48
RXMODE 52
Traceback (most recent call last):
File "", line 2, in
File "D:\Works\Python\cmsis-svd-master\python\cmsis_svd\model.py", line 502, in registers
for reg in self._lookup_possibly_derived_attribute('registers'):
TypeError: 'NoneType' object is not iterable