The following _TypeError was thrown building: type 'MappedListIterable<AkcijeDokument, Widget>' is not a subtype of type 'Widget' - flutter

Question

I am fetching list of documents from api and every document has property actions(List of actions). Documents are displayed in a List and i want to display actions in ActionPane/SlidableAction an I get an error: "Another exception was thrown: type 'MappedListIterable<AkcijeDokument, dynamic>' is not a subtype of type 'Widget'".
And error "The following _TypeError was thrown building:
type 'MappedListIterable<AkcijeDokument, dynamic>' is not a subtype of type 'Widget'"...
When I print actions like this params[index].akcije.map((ak) => print(ak.nazivAkcije)) I get response: "I/flutter (25152): Potvrdi
I/flutter (25152): Odbij", "Potvrdi" and "Odbij" are the actions that i need to fetch and display in List for each document.
And here is the code where I'm trying to display the actions
params[index].akcije.map<Widget>(
(ak) => SlidableAction(
onPressed: (context) {},
icon: Icons.bookmark,
backgroundColor: Colors.red,
label: ak.nazivAkcije,
),
),,```

Answer 1

First error is because you use map<Widget>() when the type you have in. a map is {AkcjeDokument, dynamic}
If what you want is to just print them use .map()

Answer 2

You can try:
List<Widget> ak_list;
for (var ak in params[index].akcije) {
ak_list.add(SlidableAction(
onPressed: (context) {},
icon: Icons.bookmark,
backgroundColor: Colors.red,
label: ak.nazivAkcije,
));
}
and use
//example after init
Column(children: ak_list);