safaribooksonline , ERROR: Unable to extract kaltura and ERROR: Unsupported URL

[hyber-code]

• I've verified and I assure that I'm running youtube-dl 2018.06.02

• At least skimmed through the README, most notably the FAQ and BUGS sections

• Searched the bugtracker for similar issues including closed ones

• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

• Bug report (encountered problems with youtube-dl)

after going through bug tracker , and after updating my youtube-dl , i tried to download course with other url, this is what i got

(python3) d:\Y> youtube-dl -v --username xxx --password xxx --write-sub --convert-subs srt -o "%(playlist)s\%(playlist_index)s - %(title)s.%(ext)s" "https://www.safaribooksonline.com/videos/git-essentials-livelessons/9780134655284"
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--username', 'PRIVATE', '--password', 'PRIVATE', '--write-sub', '--convert-subs', 'srt', '-o', '%(playlist)s\\%(playlist_index)s - %(title)s.%(ext)s', 'https://www.safaribooksonline.com/videos/git-essentials-livelessons/9780134655284']
[debug] Encodings: locale cp1256, fs mbcs, out cp1256, pref cp1256
[debug] youtube-dl version 2018.06.02
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.16299
[debug] exe versions: ffmpeg N-91152-g7c333dc6a7, ffprobe N-91152-g7c333dc6a7
[debug] Proxy map: {}
[generic] 9780134655284: Requesting header
[redirect] Following redirect to https://www.safaribooksonline.com/library/view/git-essentials-livelessons/9780134655284/
[safari:course] Downloading login form
[safari:course] Logging in
[safari:course] 9780134655284: Downloading course JSON
[download] Downloading playlist: Git Essentials LiveLessons
[safari:course] playlist Git Essentials LiveLessons: Collected 37 video ids (downloading 37 of them)
[download] Downloading video 1 of 37
[safari:api] Downloading login form
[safari:api] 9780134655284/gell_00_00: Downloading part JSON
[safari] Downloading login form
[safari] 9780134655284/gell_00_00: Downloading webpage
ERROR: Unable to extract kaltura reference id; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp2pwxs9zy\build\youtube_dl\YoutubeDL.py", line 792, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp2pwxs9zy\build\youtube_dl\extractor\common.py", line 500, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp2pwxs9zy\build\youtube_dl\extractor\safari.py", line 106, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp2pwxs9zy\build\youtube_dl\extractor\common.py", line 880, in _search_regex
youtube_dl.utils.RegexNotFoundError: Unable to extract kaltura reference id; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

(python3) d:\Y> youtube-dl -v --username xxx--password xxx --write-sub --convert-subs srt -o "%(playlist)s\%(playlist_index)s - %(title)s.%(ext)s" "https://www.safaribooksonline.com/learning-paths/learning-path-mining/9781491988985/"
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--username', 'PRIVATE', '--password', 'PRIVATE', '--write-sub', '--convert-subs', 'srt', '-o', '%(playlist)s\\%(playlist_index)s - %(title)s.%(ext)s', 'https://www.safaribooksonline.com/learning-paths/learning-path-mining/9781491988985/']
[debug] Encodings: locale cp1256, fs mbcs, out cp1256, pref cp1256
[debug] youtube-dl version 2018.06.02
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.16299
[debug] exe versions: ffmpeg N-91152-g7c333dc6a7, ffprobe N-91152-g7c333dc6a7
[debug] Proxy map: {}
[generic] 9781491988985: Requesting header
WARNING: Falling back on generic information extractor.
[generic] 9781491988985: Downloading webpage
[generic] 9781491988985: Extracting information
ERROR: Unsupported URL: https://www.safaribooksonline.com/learning-paths/learning-path-mining/9781491988985/
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp2pwxs9zy\build\youtube_dl\YoutubeDL.py", line 792, in extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp2pwxs9zy\build\youtube_dl\extractor\common.py", line 500, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp2pwxs9zy\build\youtube_dl\extractor\generic.py", line 3263, in _real_extract
youtube_dl.utils.UnsupportedError: Unsupported URL: https://www.safaribooksonline.com/learning-paths/learning-path-mining/9781491988985/