multi_image_picker: ^4.2.0
flutter_sticky_header: ^0.3.4
cached_network_image: ^0.7.0

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_sticky_header/flutter_sticky_header.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: Page1(),
    );
  }
}

class Page1 extends StatelessWidget {
  final String title;

  const Page1({Key key, this.title = "Page 1"}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text(title),
        ),
        body: CustomScrollView(
          slivers: <Widget>[
            SliverStickyHeader(
              header: Text('Users'),
              sliver: SliverList(
                delegate: SliverChildBuilderDelegate(
                  (context, i) => Text(i.toString()),
                ),
              ),
            ),
          ],
        ));
  }
}

  flutter_sticky_header: ^0.3.4

Compiler message:
file:///Users/calvinmuller/.pub-cache/hosted/pub.dartlang.org/flutter_sticky_header-0.3.4/lib/src/widgets/sticky_header_layout_builder.dart:147:16: Error: The argument type 'String' can't be assigned to the parameter type 'DiagnosticsNode'.
 - 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///Users/calvinmuller/iStreet/Mobile/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'DiagnosticsNode'.
      context: context);
               ^
Compiler failed on /Users/calvinmuller/iStreet/Mobile/testwhite/lib/main.dart
Error launching application on iPhone X.

Compiler message:
file:///Users/calvinmuller/.pub-cache/hosted/pub.dartlang.org/cached_network_image-0.7.0/lib/src/cached_network_image_provider.dart:46:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable<DiagnosticsNode> Function()'.
 - 'StringBuffer' is from 'dart:core'.
 - 'Iterable' is from 'dart:core'.
 - 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///Users/calvinmuller/iStreet/Mobile/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'Iterable<DiagnosticsNode> Function()'.
        informationCollector: (StringBuffer information) {
                              ^
file:///Users/calvinmuller/.pub-cache/hosted/pub.dartlang.org/multi_image_picker-4.2.0/lib/src/asset_thumb_provider.dart:35:31: Error: The argument type 'Null Function(StringBuffer)' can't be assigned to the parameter type 'Iterable<DiagnosticsNode> Function()'.
 - 'StringBuffer' is from 'dart:core'.
 - 'Iterable' is from 'dart:core'.
 - 'DiagnosticsNode' is from 'package:flutter/src/foundation/diagnostics.dart' ('file:///Users/calvinmuller/iStreet/Mobile/flutter/packages/flutter/lib/src/foundation/diagnostics.dart').
Try changing the type of the parameter, or casting the argument to 'Iterable<DiagnosticsNode> Function()'.
        informationCollector: (StringBuffer information) {

[✓] Flutter (Channel master, v1.5.9-pre.108, on Mac OS X 10.14.4 18E226, locale en-ZA)
    • Flutter version 1.5.9-pre.108 at /Users/calvinmuller/iStreet/Mobile/flutter
    • Framework revision 15f187fce0 (89 minutes ago), 2019-05-01 20:39:37 -0700
    • Engine revision ce9e9ba7e4
    • Dart version 2.3.0 (build 2.3.0-dev.0.5 b6997deb3e)