/Dart/'six_ft_apart': Icons.six_ft_apart,

'six_ft_apart': Icons.six_ft_apart,

This is Flutter 2.8 bug. Change those lines in this Location:
 C:\flutter\.pub-cache\hosted\pub.dartlang.org
 \flutter_iconpicker-3.0.4\lib\IconPicker\Packs\Material.dart
// (Use double under score to the Icons.six__
 'six_ft_apart': Icons.six__ft_apart,
  'six_ft_apart_sharp': Icons.six__ft_apart_sharp,
  'six_ft_apart_rounded': Icons.six__ft_apart_rounded,
  'six_ft_apart_outlined': Icons.six__ft_apart_outlined,

Source: stackoverflow.com

Similar codes

5 votes353 views2 answers
How to attach a FloatingActionButton to the AppBar
Dart
0 vote348 views1 answer
Dart add String item to list
Dart
1 vote323 views1 answer
Sort list descending from spesific maps key in dart
Dart
0 vote395 views1 answer
How to update listview in flutter
Dart
3 votes347 views1 answer
How to make list view non scrollable in flutter
Dart
0 vote364 views1 answer
How to call function from another file dart flutter
Dart
1 vote352 views1 answer
Open popupbutton onclick in flutter
Dart
9 votes366 views5 answers
Flutter multiline text
Dart
0 vote335 views1 answer
How to set device into autorotate in flutter
Dart
6 votes346 views1 answer
Flutter how to use ListTile Threeline
Dart