liveFeed JSON question

I just added "duration" to it because I read somewhere that may be the issue. What happens is it loads up the Roku channel, and then flashes the live video in the "Hero Row" briefly, but then it disappears and all that shows is the Search and About buttons. Is a lack of the "duration" causing this? Here's my full code (note that I have tried both with and without "duration".

Richard P.

{
    "providerName": "Pioneer Memorial Church",
    "lastUpdated": "2021-03-26T22:30:00+00:00",
    "language": "en",
    "liveFeeds": [{  
   "id":"FTXVjkLZw3H5BPeFcMWW",
   "title":"Pioneer Live",
   "content":{
            "dateAdded": "2021-03-15T22:30:00+00:00"
            , "videos": [{
                "url": "http://pioneermem.mmdlive.lldns.net/pioneermem/e62d944fc8744b1ab441fa0b0ba752a2/manifest.m3u8"
                , "quality": "FHD"
                , "videoType": "HLS"
            }],
			"language": "en-US",
			"duration": 18000
        },
   "thumbnail":"https://pmchurch.org/sites/default/files/images/brand/pmc-roku-live-slate.jpg",
   "brandedThumbnail":"https://pmchurch.org/sites/default/files/images/brand/pmc-roku-live-slate.jpg",
   "shortDescription":"Pioneer at Worship",
   "longDescription":"The live worship service from Pioneer Memorial Church.",
   "tags":[  
	"religion",
	"worship",
	"church",
	"live"
   ]
	}

    ]
}