HttpException: Error: type 'Null' is not a subtype of type 'String' in type cast
#0 new UserLinks.fromJson (package:unsplash_client/src/model/user.dart:234:37)
#1 new User.fromJson.<anonymous closure> (package:unsplash_client/src/model/user.dart:119:34)
#2 ObjectUtils.let (package:unsplash_client/src/utils.dart:10:35)
#3 new User.fromJson (package:unsplash_client/src/model/user.dart:119:12)
#4 new Photo.fromJson (package:unsplash_client/src/model/photo.dart:146:20)
#5 _deserializePhotos.<anonymous closure> (package:unsplash_client/src/photos.dart:169:54)
#6 MappedListIterable.elementAt (dart:_internal/iterable.dart:442:31)
#7 ListIterator.moveNext (dart:_internal/iterable.dart:371:26)
#8 new _GrowableList._ofEfficientLengthIterable (dart:core-patch/growable_array.dart:190:27)
#9 new _GrowableList.of (dart:core-patch/growable_array.dart:150:28)
#10 new List.of (dart:core-patch/array_patch.dart:40:18)
#11 ListIterable.toList (dart:_internal/iterable.dart:224:7)
#12 deserializeObjectList (package:unsplash_client/src/utils.dart:34:65)
#13 _deserializePhotos (package:unsplash_client/src/photos.dart:169:10)
#14 Request.go (package:unsplash_client/src/client.dart:212:31)
<asynchronous suspension>
#15 RequestExtension.goAndGet (package:unsplash_client/src/client.dart:383:13)
<asynchronous suspension>
#16 randomUnsplashImage (package:server/unsplash.dart:26:34)
