Traceback (most recent call last):

 "/usr/lib/python2.7/multiprocessing/process.py", line 258, in _bootstrap
self.run()

 "/usr/lib/python2.7/multiprocessing/process.py", line 114, in run
self._target(_self._args, *_self._kwargs)

 "/root/owtf/framework/report/reporting_process.py", line 59, in start
self.generate_reports(filename)

 "/root/owtf/framework/report/reporting_process.py", line 93, in generate_reports
self.core.Reporter.ReportFinish(target,new_urls[target])

 "/root/owtf/framework/report/reporter.py", line 272, in ReportFinish
with codecs.open(self.CCG('HTML_DETAILED_REPORT_PATH'), 'w',"utf-8") as file:

 "/usr/lib/python2.7/codecs.py", line 881, in open
file = __builtin__.open(filename, mode, buffering)TypeError: coercing to Unicode: need string or buffer, NoneType found
WARNING: Automatic signature extraction failed: Traceback (most recent call last):

 "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 874, in _decrypt_signature
video_id, player_url, len(s)

 "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 376, in _extract_signature_function
res = self._parse_sig_js(code)

 "/usr/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 444, in _parse_sig_js
u'Initial JS player signature function name')

 "/usr/bin/youtube-dl/youtube_dl/extractor/common.py", line 383, in _search_regex
raise RegexNotFoundError(u'Unable to extract %s' % _name)RegexNotFoundError: Unable to extract Initial JS player signature function name; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type
youtube-dl -U
to update.