phase3: youtube_player_iframe 2.x->5.x migration (fromVideoId)

lib/widgets/mobile/mobile_igoshow_learn_more.dart

@@ -79,14 +79,10 @@ class MobileiGoShowLearnMoreState extends State<MobileiGoShowLearnMore> {
           ),
         );
       } else if (((widget.data['sections'] as List)[i]['youtube_videos'] as List).length > 0) {
-        YoutubePlayerController _controller = YoutubePlayerController(
-          initialVideoId: '${((widget.data['sections'] as List)[i]['youtube_videos'] as List)[0] as String}',
-          params: YoutubePlayerParams(
-            playlist: ((widget.data['sections'] as List)[i]['youtube_videos'] as List).length > 1 ?
-            ((widget.data['sections'] as List)[i]['youtube_videos'] as List).map((e) {
-              return '$e';
-            }).toList() : [], // Defining custom playlist
-            startAt: Duration(seconds: 0),
+        YoutubePlayerController _controller = YoutubePlayerController.fromVideoId(
+          videoId: '${((widget.data['sections'] as List)[i]['youtube_videos'] as List)[0] as String}',
+          startSeconds: 0,
+          params: const YoutubePlayerParams(
             showControls: true,
             showFullscreenButton: false,
           ),