Extractor error caused by KeyError('@id')

[AndKe]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2020.06.16.1
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Verbose log

youtube-dl --verbose https://tv.nrk.no/serie/das-boot/sesong/2/episode/1/avspiller
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', 'https://tv.nrk.no/serie/das-boot/sesong/2/episode/1/avspiller']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2020.06.16.1
[debug] Python version 3.8.2 (CPython) - Linux-5.4.0-40-generic-x86_64-with-glibc2.29
[debug] exe versions: ffmpeg 4.2.2, ffprobe 4.2.2
[debug] Proxy map: {}
[NRKTVEpisode] das-boot/sesong/2/episode/1: Downloading webpage
ERROR: An extractor error has occurred. (caused by KeyError('@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 "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/nrk.py", line 428, in _real_extract
    nrk_id = self._parse_json(
KeyError: '@id'
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/nrk.py", line 428, in _real_extract
    nrk_id = self._parse_json(
KeyError: '@id'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 797, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 543, in extract
    raise ExtractorError('An extractor error has occurred.', cause=e)
youtube_dl.utils.ExtractorError: An extractor error has occurred. (caused by KeyError('@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.

Description

I have used subtitle options like youtube-dl --write-sub --convert-subs srt --embed-subs https://tv.nrk.no/serie/das-boot/sesong/2/episode/1/avspiller before - it worked fine - but now even basic rip like youtube-dl https://tv.nrk.no/serie/das-boot/sesong/2/episode/1/avspiller fail.