Flutter - 'List<dynamic>' is not a subtype of type - flutter

Question

I've been looking for a WordPress + Flutter App integration and found a good one, but I got this error message:
I'm pretty this is a simple error, but I'm more into a design guy than a dev, so would be great if some of you give me some tip about it. Thanks in advance!
import 'dart:convert';
import 'package:http/http.dart' as http;
import '../config.dart';
import '../model/post_entity.dart';
class WpApi {
static const String BASE_URL = URL + REST_URL_PREFIX + '/wp/v2/';
static Future<List<PostEntity>> getPostsList(
{int category = 0, int page = 1}) async {
var posts = [];
try {
String extra = category != 0 ? '&categories=' + '$category' : '';
dynamic response = await http.get(Uri.parse(BASE_URL +
'''
posts?_embed&page=$page''' +
extra));
dynamic json = jsonDecode(response.body);
(json as List).forEach((v) {
posts.add(PostEntity.fromJson(v));
});
} catch (e) {
//TODO Handle No Internet Response
}
return posts;
}
static Future<List<PostCategory>> getCategoriesList({int page = 1}) async {
List<PostCategory> categories = [];
try {
dynamic response = await http.get(Uri.parse(BASE_URL +
'categories?orderby=count&order=desc&per_page=15&page=$page'));
dynamic json = jsonDecode(response.body);
(json as List).forEach((v) {
categories.add(PostCategory.fromJson(v));
});
} catch (e) {
//TODO Handle No Internet Response
}
return categories;
}
}
The error is on the return posts;
Exception has occurred.
_TypeError (type 'List<dynamic>' is not a subtype of type 'FutureOr<List<PostEntity>>')

Answer 1

change var posts = [] to List<PostEntity> posts = []
static Future<List<PostEntity>> getPostsList(
{int category = 0, int page = 1}) async {
List<PostEntity> posts = []; //<-- change var posts = [] to List<PostEntity> posts = []
try { ...