Error trying to download a tumblr blog

[KaMyKaSii]

I'm using the lastest gallery-dl from master branch

$ gallery-dl --verbose http://brainoddity.tumblr.com
[gallery-dl][debug] Version 1.8.0
[gallery-dl][debug] Python 3.7.2 - Linux-4.4.78-perf+-aarch64-with-libc
[gallery-dl][debug] requests 2.20.1 - urllib3 1.24.1
[gallery-dl][debug] Starting DownloadJob for 'http://brainoddity.tumblr.com'
[tumblr][debug] Using api_key authentication
[tumblr][debug] Using TumblrUserExtractor for 'http://brainoddity.tumblr.com'
[urllib3.connectionpool][debug] Starting new HTTPS connection (1): api.tumblr.com:443
[urllib3.connectionpool][debug] https://api.tumblr.com:443 "GET /v2/blog/brainoddity.tumblr.com/posts?offset=0&limit=50&reblog_info=true&api_key=O3hU2tMi5e4Qs5t3vezEi6L0qRORJ5y9oUpSGsrWu8iA3UCc3B HTTP/1.1" 200 14226
[urllib3.connectionpool][debug] https://api.tumblr.com:443 "GET /v2/blog/brainoddity.tumblr.com/avatar?size=512&api_key=O3hU2tMi5e4Qs5t3vezEi6L0qRORJ5y9oUpSGsrWu8iA3UCc3B HTTP/1.1" 200 17113
[chardet.charsetprober][debug] SHIFT_JIS Japanese prober hit error at byte 61
[chardet.charsetprober][debug] EUC-JP Japanese prober hit error at byte 0
[chardet.charsetprober][debug] GB2312 Chinese prober hit error at byte 33
[chardet.charsetprober][debug] EUC-KR Korean prober hit error at byte 0
[chardet.charsetprober][debug] CP949 Korean prober hit error at byte 32
[chardet.charsetprober][debug] Big5 Chinese prober hit error at byte 0
[chardet.charsetprober][debug] EUC-TW Taiwan prober hit error at byte 0
[chardet.charsetprober][debug] KOI8-R confidence = 0.032090026649353516, below negative shortcut threshhold 0.05
[chardet.charsetprober][debug] ISO-8859-5 confidence = 0.04426187605640029, below negative shortcut threshhold 0.05
[chardet.charsetprober][debug] IBM866 confidence = 0.045901753893047764, below negative shortcut threshhold 0.05
[chardet.charsetprober][debug] IBM855 confidence = 0.045549786717880486, below negative shortcut threshhold 0.05
[chardet.charsetprober][debug] ISO-8859-5 confidence = 0.04209935747456179, below negative shortcut threshhold 0.05
[chardet.charsetprober][debug] windows-1251 confidence = 0.04913933236352961, below negative shortcut threshhold 0.05
[chardet.charsetprober][debug] ISO-8859-9 confidence = 0.03608183024906905, below negative shortcut threshhold 0.05
[chardet.charsetprober][debug] windows-1251 Russian confidence = 0.057060059387649326
[chardet.charsetprober][debug] KOI8-R not active
[chardet.charsetprober][debug] ISO-8859-5 not active
[chardet.charsetprober][debug] MacCyrillic Russian confidence = 0.06055012641024155
[chardet.charsetprober][debug] IBM866 not active
[chardet.charsetprober][debug] IBM855 not active
[chardet.charsetprober][debug] ISO-8859-7 Greek confidence = 0.072514008142608
[chardet.charsetprober][debug] windows-1253 Greek confidence = 0.07359168577273488
[chardet.charsetprober][debug] ISO-8859-5 not active
[chardet.charsetprober][debug] windows-1251 not active
[chardet.charsetprober][debug] TIS-620 Thai confidence = 0.04150451057466478
[chardet.charsetprober][debug] ISO-8859-9 not active
[chardet.charsetprober][debug] windows-1255 Hebrew confidence = 0.0
[chardet.charsetprober][debug] windows-1255 Hebrew confidence = 0.0640845057959324
[chardet.charsetprober][debug] windows-1255 Hebrew confidence = 0.06473510991568807
[tumblr][error] An unexpected error occurred: JSONDecodeError - Expecting value: line 1 column 1 (char 0). Please run gallery-dl again with the --verbose flag, copy its output and report this issue on https://github.com/mikf/gallery-dl/issues .
[tumblr][debug]
Traceback (most recent call last):
  File "/data/data/com.termux/files/usr/lib/python3.7/site-packages/gallery_dl/job.py", line 54, in run
    for msg in self.extractor:
  File "/data/data/com.termux/files/usr/lib/python3.7/site-packages/gallery_dl/extractor/tumblr.py", line 81, in items
    url = self.api.avatar(self.blog)
  File "/data/data/com.termux/files/usr/lib/python3.7/site-packages/gallery_dl/extractor/tumblr.py", line 338, in avatar
    data = self._call(blog, "avatar", params, allow_redirects=False)
  File "/data/data/com.termux/files/usr/lib/python3.7/site-packages/gallery_dl/extractor/tumblr.py", line 371, in _call
    data = response.json()
  File "/data/data/com.termux/files/usr/lib/python3.7/site-packages/requests/models.py", line 897, in json
    return complexjson.loads(self.text, **kwargs)
  File "/data/data/com.termux/files/usr/lib/python3.7/json/__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "/data/data/com.termux/files/usr/lib/python3.7/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/data/data/com.termux/files/usr/lib/python3.7/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
  json.decoder.JS