animerush - YFVF missing from extractors

[garbled1]

Describe the bug

Attempting to download Valkyria Chronicles: Theater from animerush, get a failure for all 4 qualities. Looks like there is no extractor for yfvf?

ytdl@rotanev:~$ anime dl --provider animerush Valkyria
anime: anime-downloader 5.0.14
+--------+--------------------------------------------+--------+
| 6 | Valkyria Chronicles 3: Tagatame no Juusou | |
| 5 | Valkyria Chronicles | |
| 4 | Valkyria Chronicles: Unrecorded Chronicles | |
| 3 | Strike the Blood: Valkyria no Oukoku-hen | |
| 2 | Valkyria Chronicles: Theater | |
| 1 | Hyakuren no Haou to Seiyaku no Valkyria | |
|--------+--------------------------------------------+--------|
| SlNo | Title | Meta |
+--------+--------------------------------------------+--------+
Enter the anime no: [1]: 2
anime: Selected Valkyria Chronicles: Theater
anime: Extracting episode info from page
anime: Found anime: Valkyria Chronicles: Theater
anime: Downloading to /video/TV/Anime
anime: Quality 1080p not found. Trying 720p.
anime: Quality 720p not found. Trying 480p.
anime: Quality 480p not found. Trying 360p.
anime: Skipping episode: 1
ERROR: No episode sources found.

To reproduce

anime dl --provider animerush Valkyria -c 2

LOG

2021-10-02 21:04:10 rotanev anime_downloader.sites.helpers.request[20070] DEBUG {'user-agent': 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/604.0 (KHTML, like Gecko) Chrome/90.0.4416.95 Safari/604.0'}
2021-10-02 21:04:10 rotanev anime_downloader.sites.helpers.request[20070] DEBUG -----
2021-10-02 21:04:10 rotanev anime_downloader.session[20070] DEBUG cached request
2021-10-02 21:04:10 rotanev anime_downloader.sites.helpers.request[20070] DEBUG https://www.animerush.tv/Valkyria-Chronicles-Theater-episode-1/
2021-10-02 21:04:10 rotanev anime_downloader.sites.helpers.request[20070] DEBUG /tmp/animedltf762e2c/tmplkanqfbc
2021-10-02 21:04:10 rotanev anime_downloader.sites.animerush[20070] DEBUG Sources: [['https://www.yfvf.com/player/ZLRGWLZXhUYLQ68/', 'YFVF']]
2021-10-02 21:04:10 rotanev anime_downloader.sites.anime[20070] DEBUG Data : []
2021-10-02 21:04:10 rotanev anime_downloader.sites.anime[20070] DEBUG Sorted sources : []
2021-10-02 21:04:10 rotanev anime_downloader.sites.anime[20070] DEBUG Sources : 
2021-10-02 21:04:10 rotanev anime_downloader.sites.anime[20070] WARNING Skipping episode: 1
2021-10-02 21:04:10 rotanev anime_downloader.util[20070] DEBUG cmd: {aria2}
DEBUG:anime_downloader.util:cmd: {aria2}
2021-10-02 21:04:10 rotanev anime_downloader.util[20070] DEBUG episode: <anime_downloader.sites.animerush.AnimeRushEpisode object at 0x7f0bb6d7a080>