Fehlerkorrekturen

lib/protocoll_messages/fin_tour_message.g.dart

@@ -18,7 +18,9 @@ Map<String, dynamic> _$FinTourMessageToJson(FinTourMessage instance) =>
 FinTour _$FinTourFromJson(Map<String, dynamic> json) => FinTour()
   ..trId = json['tr_id'] as int
   ..com = json['com'] as String
-  ..track = Track.fromJson(json['track'] as Map<String, dynamic>)
+  ..track = json['track'] == null
+      ? null
+      : Track.fromJson(json['track'] as Map<String, dynamic>)
   ..tasks = (json['tasks'] as List<dynamic>)
       .map((e) => FinTourTask.fromJson(e as Map<String, dynamic>))
       .toList();