RangeError (index): Invalid value: Valid value range is empty: 34 - flutter

Question

EDIT:
Since the data is now showing if I do hot reload after the error. I am assuming that my other Futurethat isn't included in my FutureBuilder triggers that error.
HERE ARE THE ACTUAL FUNCTIONS:
List<Feed> feedList = [];
List<User> userList = [];
#override
void initState() {
super.initState();
getFeed = getFeedAll();
this.getUsers();
}
Future<List<Feed>> getFeedAll() async {
var res = await http.get(
Uri.encodeFull(APIServices.httpDomain + APIServices.postGetAll),
headers: {"Authorization": "Bearer " + Constants.token});
if (res.statusCode == 200) {
var data = json.decode(res.body);
this.getUsers();
feedList = data.map<Feed>((json) => Feed.fromJson(json)).toList();
}
return feedList;
}
Future<List<User>> getUsers() async {
var res = await http.get(
Uri.encodeFull(APIServices.httpDomain + APIServices.usersAll),
headers: {"Authorization": "Bearer " + Constants.token});
if (res.statusCode == 200) {
var data = json.decode(res.body);
userList = data.map<User>((json) => User.fromJson(json)).toList();
}
return userList;
}
#override
Widget build(BuildContext context) {
return FutureBuilder(
future: getFeed,
builder: (context, snapshot) {
if (snapshot.hasData) {
return Container(
padding: EdgeInsets.all(10),
child: feedListWidget(snapshot.data));
} else {
return Container(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
child: Center(
child: Container(
width: 50,
height: 50,
child: CircularProgressIndicator(),
),
),
);
}
},
);
}
Now, I am using userList inside my feedListWidget widget.
I am pretty sure that getUsers() triggers that error.
How can I include getUsers() inside my FutureBuilder?
Because that's what I think will solve my problem.

Answer 1

Seems like you are not waiting for the data here:
getFeed = getFeedAll();
this.getUsers();
Use await to perform that
getFeed = await getFeedAll();
await this.getUsers();