Sankaku exception

[scottlee1]

Sankaku post Id: 6443742. cause exception.

gallery-dl --verbose "https://chan.sankakucomplex.com/?tags=date:2017-10-01..2017-10-31T23:55:00:00+-rating:s+-animated+-webm+-mp4&commit=Search"

[gallery-dl][debug] Version 1.0.2
[gallery-dl][debug] Python 3.4.2 - Linux-4.9.47-v7+-armv7l-with-debian-8.0
[gallery-dl][debug] Starting DownloadJob for 'https://chan.sankakucomplex.com/?tags=date:2017-10-01..2017-10-31T23:55:00:00+-rating:s+-animated+-webm+-mp4&commit=Search'
[sankaku][debug] Using SankakuTagExtractor for https://chan.sankakucomplex.com/?tags=date:2017-10-01..2017-10-31T23:55:00:00+-rating:s+-animated+-webm+-mp4&commit=Search
[urllib3.connectionpool][info] Starting new HTTPS connection (1): chan.sankakucomplex.com
[urllib3.connectionpool][debug] "GET /?page=1&tags=date%3A2017-10-01..2017-10-31T23%3A55%3A00%3A00+-rating%3As+-animated+-webm+-mp4 HTTP/1.1" 200 None
[urllib3.connectionpool][debug] "GET /post/show/6443843 HTTP/1.1" 200 None

/home/scott/PIC/sankaku/6443843.png

[urllib3.connectionpool][debug] "GET /post/show/6443842 HTTP/1.1" 200 None
[sankaku][error] An unexpected error occurred: TypeError - argument of type 'NoneType' is not iterable. Please run gallery-dl again with the --verbose flag, copy its output and report this issue on https://github.com/mikf/gallery-dl/issues .
[sankaku][debug] Traceback
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/gallery_dl/job.py", line 58, in run
for msg in self.extractor:
File "/usr/local/lib/python3.4/dist-packages/gallery_dl/extractor/sankaku.py", line 55, in items
for image in self.get_images():
File "/usr/local/lib/python3.4/dist-packages/gallery_dl/extractor/sankaku.py", line 76, in get_images
image = self.get_image_metadata(image_id)
File "/usr/local/lib/python3.4/dist-packages/gallery_dl/extractor/sankaku.py", line 96, in get_image_metadata
"file_url": "https:" + text.unescape(image_url),
File "/usr/lib/python3.4/html/init.py", line 130, in unescape
if '&' not in s:
TypeError: argument of type 'NoneType' is not iterable