Unhandled Exception: Converting object to an encodable object failed: Photography

[Bhanuka Isuru]

my cloud_firestore looks like this:

all_images:{imageUrl:[]}, couplePhoto:String, female:String, image_url:String, info:String, male:String

my model class: 

 

  import 'package:json_annotation/json_annotation.dart';
    part 'Model.g.dart';
   
    @JsonSerializable()
    class Photography {
      final List<AllImages> all_images;
      final String couplePhoto;
      final String female;
      final String image_url;
      final String info;
      final String male;
   
      Photography(this.all_images, this.couplePhoto, this.female, this.image_url,
          this.info, this.male);
   
      factory Photography.fromJson(Map<String, dynamic> json) =>
          _$PhotographyFromJson(json);
   
      Map<String, dynamic> toJson() => _$PhotographyToJson(this);
    }
   
    @JsonSerializable()
    class AllImages {
      final List<String> imageUrl;
   
      AllImages(this.imageUrl);
   
      factory AllImages.fromJson(Map<String, dynamic> json) =>
          _$AllImagesFromJson(json);
   
      Map<String, dynamic> toJson() => _$AllImagesToJson(this);
    }

Currently, I haven't adminPanel to data insert. so, now I need to read data.

When running this database, the error is coming in here.

   

     Future<Photography> postsMap = Firestore.instance
            .collection('photography')
            .document("0yUc5QBGHNNq6WK9CyyF")
            .setData(jsonDecode(jsonEncode(Photography)));