Error: The RSS file isn’t working

We tried to get the RSS file for this podcast - http://talk4two.com/feed/podcast/ - but it wouldn’t load for us.

array (
  'wrapperType' => 'track',
  'kind' => 'podcast',
  'collectionId' => 1004202119,
  'trackId' => 1004202119,
  'artistName' => 'Matt Bailey',
  'collectionName' => 'Talk For Two - The Number 1 Performing Arts Podcast',
  'trackName' => 'Talk For Two - The Number 1 Performing Arts Podcast',
  'collectionCensoredName' => 'Talk For Two - The Number 1 Performing Arts Podcast',
  'trackCensoredName' => 'Talk For Two - The Number 1 Performing Arts Podcast',
  'collectionViewUrl' => 'https://podcasts.apple.com/us/podcast/talk-for-two-the-number-1-performing-arts-podcast/id1004202119?uo=4',
  'feedUrl' => 'http://talk4two.com/feed/podcast/',
  'trackViewUrl' => 'https://podcasts.apple.com/us/podcast/talk-for-two-the-number-1-performing-arts-podcast/id1004202119?uo=4',
  'artworkUrl30' => 'https://is5-ssl.mzstatic.com/image/thumb/Podcasts62/v4/ac/be/a7/acbea71b-a6d9-d351-02e2-35b2881f640f/mza_859830871242289.jpg/30x30bb.jpg',
  'artworkUrl60' => 'https://is5-ssl.mzstatic.com/image/thumb/Podcasts62/v4/ac/be/a7/acbea71b-a6d9-d351-02e2-35b2881f640f/mza_859830871242289.jpg/60x60bb.jpg',
  'artworkUrl100' => 'https://is5-ssl.mzstatic.com/image/thumb/Podcasts62/v4/ac/be/a7/acbea71b-a6d9-d351-02e2-35b2881f640f/mza_859830871242289.jpg/100x100bb.jpg',
  'collectionPrice' => 0.0,
  'trackPrice' => 0.0,
  'trackRentalPrice' => 0,
  'collectionHdPrice' => 0,
  'trackHdPrice' => 0,
  'trackHdRentalPrice' => 0,
  'releaseDate' => '2019-09-09T21:21:00Z',
  'collectionExplicitness' => 'notExplicit',
  'trackExplicitness' => 'notExplicit',
  'trackCount' => 203,
  'country' => 'USA',
  'currency' => 'USD',
  'primaryGenreName' => 'Performing Arts',
  'artworkUrl600' => 'https://is5-ssl.mzstatic.com/image/thumb/Podcasts62/v4/ac/be/a7/acbea71b-a6d9-d351-02e2-35b2881f640f/mza_859830871242289.jpg/600x600bb.jpg',
  'genreIds' => 
  array (
    0 => '1405',
    1 => '26',
    2 => '1301',
  ),
  'genres' => 
  array (
    0 => 'Performing Arts',
    1 => 'Podcasts',
    2 => 'Arts',
  ),
)...https://itunes.apple.com/lookup?id=1004202119

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