Error: The RSS file isn’t working

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

array (
  'wrapperType' => 'track',
  'kind' => 'podcast',
  'collectionId' => 1109906490,
  'trackId' => 1109906490,
  'artistName' => 'Lorinda Buckingham',
  'collectionName' => 'The Modern Executive',
  'trackName' => 'The Modern Executive',
  'collectionCensoredName' => 'The Modern Executive',
  'trackCensoredName' => 'The Modern Executive',
  'collectionViewUrl' => 'https://podcasts.apple.com/us/podcast/the-modern-executive/id1109906490?uo=4',
  'feedUrl' => 'https://themodernexecutive.podbean.com/feed/',
  'trackViewUrl' => 'https://podcasts.apple.com/us/podcast/the-modern-executive/id1109906490?uo=4',
  'artworkUrl30' => 'https://is5-ssl.mzstatic.com/image/thumb/Podcasts118/v4/e0/ed/20/e0ed2095-d3ab-5f3e-8c54-f8e84f6c3448/mza_1062595460716482335.jpg/30x30bb.jpg',
  'artworkUrl60' => 'https://is5-ssl.mzstatic.com/image/thumb/Podcasts118/v4/e0/ed/20/e0ed2095-d3ab-5f3e-8c54-f8e84f6c3448/mza_1062595460716482335.jpg/60x60bb.jpg',
  'artworkUrl100' => 'https://is5-ssl.mzstatic.com/image/thumb/Podcasts118/v4/e0/ed/20/e0ed2095-d3ab-5f3e-8c54-f8e84f6c3448/mza_1062595460716482335.jpg/100x100bb.jpg',
  'collectionPrice' => 0.0,
  'trackPrice' => 0.0,
  'trackRentalPrice' => 0,
  'collectionHdPrice' => 0,
  'trackHdPrice' => 0,
  'trackHdRentalPrice' => 0,
  'releaseDate' => '2019-08-01T15:45:00Z',
  'collectionExplicitness' => 'cleaned',
  'trackExplicitness' => 'cleaned',
  'trackCount' => 15,
  'country' => 'USA',
  'currency' => 'USD',
  'primaryGenreName' => 'Careers',
  'contentAdvisoryRating' => 'Clean',
  'artworkUrl600' => 'https://is5-ssl.mzstatic.com/image/thumb/Podcasts118/v4/e0/ed/20/e0ed2095-d3ab-5f3e-8c54-f8e84f6c3448/mza_1062595460716482335.jpg/600x600bb.jpg',
  'genreIds' => 
  array (
    0 => '1410',
    1 => '26',
    2 => '1321',
  ),
  'genres' => 
  array (
    0 => 'Careers',
    1 => 'Podcasts',
    2 => 'Business',
  ),
)...https://itunes.apple.com/lookup?id=1109906490

Here’s our front page.