Error: The RSS file isn’t working

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

array (
  'wrapperType' => 'track',
  'kind' => 'podcast',
  'collectionId' => 360889910,
  'trackId' => 360889910,
  'artistName' => 'Will Smith, Norman Chan, Jeremy Williams',
  'collectionName' => 'This is Only a Test',
  'trackName' => 'This is Only a Test',
  'collectionCensoredName' => 'This is Only a Test',
  'trackCensoredName' => 'This is Only a Test',
  'collectionViewUrl' => 'https://podcasts.apple.com/us/podcast/this-is-only-a-test/id360889910?uo=4',
  'feedUrl' => 'http://www.tested.com/podcast-xml/',
  'trackViewUrl' => 'https://podcasts.apple.com/us/podcast/this-is-only-a-test/id360889910?uo=4',
  'artworkUrl30' => 'https://is2-ssl.mzstatic.com/image/thumb/Podcasts62/v4/63/2f/a8/632fa87a-5784-be26-0bac-2d0fb254ff38/mza_6276263536174544286.jpg/30x30bb.jpg',
  'artworkUrl60' => 'https://is2-ssl.mzstatic.com/image/thumb/Podcasts62/v4/63/2f/a8/632fa87a-5784-be26-0bac-2d0fb254ff38/mza_6276263536174544286.jpg/60x60bb.jpg',
  'artworkUrl100' => 'https://is2-ssl.mzstatic.com/image/thumb/Podcasts62/v4/63/2f/a8/632fa87a-5784-be26-0bac-2d0fb254ff38/mza_6276263536174544286.jpg/100x100bb.jpg',
  'collectionPrice' => 0.0,
  'trackPrice' => 0.0,
  'trackRentalPrice' => 0,
  'collectionHdPrice' => 0,
  'trackHdPrice' => 0,
  'trackHdRentalPrice' => 0,
  'releaseDate' => '2019-09-12T07:00:00Z',
  'collectionExplicitness' => 'cleaned',
  'trackExplicitness' => 'cleaned',
  'trackCount' => 300,
  'country' => 'USA',
  'currency' => 'USD',
  'primaryGenreName' => 'Technology',
  'contentAdvisoryRating' => 'Clean',
  'artworkUrl600' => 'https://is2-ssl.mzstatic.com/image/thumb/Podcasts62/v4/63/2f/a8/632fa87a-5784-be26-0bac-2d0fb254ff38/mza_6276263536174544286.jpg/600x600bb.jpg',
  'genreIds' => 
  array (
    0 => '1318',
    1 => '26',
    2 => '1533',
    3 => '1489',
    4 => '1528',
  ),
  'genres' => 
  array (
    0 => 'Technology',
    1 => 'Podcasts',
    2 => 'Science',
    3 => 'News',
    4 => 'Tech News',
  ),
)...https://itunes.apple.com/lookup?id=360889910

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