Clicking on episodes of a podcast with no episode crashes

When a podcast is created, but no episodes have been added, clicking on the episodes tab causes a crash. The fact that there are no episodes should be reported instead.

APPPATH/Controllers/Podcast.php at line 72

65         $yearQuery = $this->request->getGet('year');
66         $seasonQuery = $this->request->getGet('season');
67 
68         if (!$yearQuery and !$seasonQuery) {
69             $defaultQuery = (new EpisodeModel())->getDefaultQuery(
70                 $this->podcast->id,
71             );
72             if ($defaultQuery['type'] == 'season') {
73                 $seasonQuery = $defaultQuery['data']['season_number'];
74             } elseif ($defaultQuery['type'] == 'year') {
75                 $yearQuery = $defaultQuery['data']['year'];
76             }
77         }
78 
79         $cacheName = implode(