yt-dlp: CBC Gem updated and now download is broken

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Checklist

• I’m reporting a broken site
• I’ve verified that I’m running yt-dlp version 2023.02.17 (update instructions) or later (specify commit)
• I’ve checked that all provided URLs are playable in a browser with the same IP and same login details
• I’ve checked that all URLs and arguments with special characters are properly quoted or escaped
• I’ve searched known issues and the bugtracker for similar issues including closed ones. DO NOT post duplicates
• I’ve read the guidelines for opening an issue
• I’ve read about sharing account credentials and I’m willing to share it if required

Region

Canada

Provide a description that is worded well enough to be understood

I was able to download videos from CBC Gem a couple of days ago, but they’ve very recently (possibly only today) updated the website and how it displays the videos. As far as I can tell the URLs remain the same but the video will no longer download.

I tried downloading URLs I knew worked before and trying completely new URLs.

Provide verbose output that clearly demonstrates the problem

• Run your yt-dlp command with -vU flag added (yt-dlp -vU <your command line>)
• If using API, add 'verbose': True to YoutubeDL params instead
• Copy the WHOLE output (starting with [debug] Command-line config) and insert it below

Complete Verbose Output

[debug] Command-line config: ['--username', 'PRIVATE', '--password', 'PRIVATE', '--embed-subs', '--embed-metadata', '--embed-thumbnail', '-i', '-vU', 'https://gem.cbc.ca/nadiyas-family-favourites/s01e01']
[debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version 2023.02.17 [a0a7c01] (pip)
[debug] Python 3.10.0 (CPython AMD64 64bit) - Windows-10-10.0.19044-SP0 (OpenSSL 1.1.1l  24 Aug 2021)
[debug] exe versions: ffmpeg 2021-10-28-git-e84c83ef98-full_build-www.gyan.dev (setts), ffprobe 2021-10-28-git-e84c83ef98-full_build-www.gyan.dev
[debug] Optional libraries: Cryptodome-3.11.0, brotli-1.0.9, certifi-2021.10.08, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.0
[debug] Proxy map: {}
[debug] Loaded 1782 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Latest version: 2023.02.17, Current version: 2023.02.17
yt-dlp is up to date (2023.02.17)
[generic] Extracting URL: https://gem.cbc.ca/nadiyas-family-favourites/s01e01
[generic] s01e01: Downloading webpage
WARNING: [generic] Falling back on generic information extractor
[generic] s01e01: Extracting information
[debug] Looking for embeds
WARNING: [generic] s01e01: Failed to parse JSON: Expecting property name enclosed in double quotes in '': line 1 column 2 (char 1)
ERROR: Unsupported URL: https://gem.cbc.ca/nadiyas-family-favourites/s01e01
Traceback (most recent call last):
  File "C:\Users\XXX\AppData\Local\Programs\Python\Python310\lib\site-packages\yt_dlp\YoutubeDL.py", line 1502, in wrapper
    return func(self, *args, **kwargs)
  File "C:\Users\XXX\AppData\Local\Programs\Python\Python310\lib\site-packages\yt_dlp\YoutubeDL.py", line 1578, in __extract_info
    ie_result = ie.extract(url)
  File "C:\Users\XXX\AppData\Local\Programs\Python\Python310\lib\site-packages\yt_dlp\extractor\common.py", line 693, in extract
    ie_result = self._real_extract(url)
  File "C:\Users\XXX\AppData\Local\Programs\Python\Python310\lib\site-packages\yt_dlp\extractor\generic.py", line 2509, in _real_extract
    raise UnsupportedError(url)
yt_dlp.utils.UnsupportedError: Unsupported URL: https://gem.cbc.ca/nadiyas-family-favourites/s01e01