Error: The RSS file isn’t working

We tried to get the RSS file for this podcast - http://runningmate.podOmatic.com/rss2.xml - but it wouldn’t load for us.

-
Fatal Error 5: Extra content at the end of the document
  Line: 158
  Column: 1array (
  'wrapperType' => 'track',
  'kind' => 'podcast',
  'collectionId' => 323773207,
  'trackId' => 323773207,
  'artistName' => 'RUNNING MATE',
  'collectionName' => 'Couch to 5K (C25K) 5K101.com',
  'trackName' => 'Couch to 5K (C25K) 5K101.com',
  'collectionCensoredName' => 'Couch to 5K (C25K) 5K101.com',
  'trackCensoredName' => 'Couch to 5K (C25K) 5K101.com',
  'collectionViewUrl' => 'https://podcasts.apple.com/us/podcast/couch-to-5k-c25k-5k101-com/id323773207?uo=4',
  'feedUrl' => 'http://runningmate.podOmatic.com/rss2.xml',
  'trackViewUrl' => 'https://podcasts.apple.com/us/podcast/couch-to-5k-c25k-5k101-com/id323773207?uo=4',
  'artworkUrl30' => 'https://is4-ssl.mzstatic.com/image/thumb/Podcasts113/v4/03/de/ed/03deed00-8c86-743c-d715-c25bba08ae3a/mza_1988886172388128768.jpg/30x30bb.jpg',
  'artworkUrl60' => 'https://is4-ssl.mzstatic.com/image/thumb/Podcasts113/v4/03/de/ed/03deed00-8c86-743c-d715-c25bba08ae3a/mza_1988886172388128768.jpg/60x60bb.jpg',
  'artworkUrl100' => 'https://is4-ssl.mzstatic.com/image/thumb/Podcasts113/v4/03/de/ed/03deed00-8c86-743c-d715-c25bba08ae3a/mza_1988886172388128768.jpg/100x100bb.jpg',
  'collectionPrice' => 0.0,
  'trackPrice' => 0.0,
  'trackRentalPrice' => 0,
  'collectionHdPrice' => 0,
  'trackHdPrice' => 0,
  'trackHdRentalPrice' => 0,
  'releaseDate' => '2017-11-30T21:07:00Z',
  'collectionExplicitness' => 'cleaned',
  'trackExplicitness' => 'cleaned',
  'trackCount' => 7,
  'country' => 'USA',
  'currency' => 'USD',
  'primaryGenreName' => 'Fitness',
  'contentAdvisoryRating' => 'Clean',
  'artworkUrl600' => 'https://is4-ssl.mzstatic.com/image/thumb/Podcasts113/v4/03/de/ed/03deed00-8c86-743c-d715-c25bba08ae3a/mza_1988886172388128768.jpg/600x600bb.jpg',
  'genreIds' => 
  array (
    0 => '1514',
    1 => '26',
    2 => '1512',
  ),
  'genres' => 
  array (
    0 => 'Fitness',
    1 => 'Podcasts',
    2 => 'Health & Fitness',
  ),
)

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