Type Null is not a subtype of type Iterable -- Show empty result on listview

Currently I am rewriting my supabase backend to laravel app with custom API's.
In the rewrite I am using data types from flutterflow and so far it has been great.

Problem:
I have a typical api like so:
/api/locations/[id]/tournaments <-- this returns a set of tournaments for the queried location.
If there is a tournament then this will be mapped to the data type.
Code below is a typical api return which has tournaments to return.

{
  "data": [
    {
      "id": "5SbXAehBY5V8",
      "title": "Nam est quia quod velit sunt asperiores.",
      "sex": "Man",
      "date": "2005-10-26T00:00:00.000000Z",
      "game_type": "701",
      "game_mode": "Single",
      "address": {
        "id": "j4hLRF6i5CHZ",
        "street_address": "90649 Lind Ridges",
        "house_number": "3492",
        "postalcode": "03038",
        "city": "Aydenview",
        "province": "Georgia",
        "country": "Japan",
        "maps_url": "https://kuhic.com/sunt-ipsam-quia-ut-et-nisi-id.html",
        "longitude": "80.9826970",
        "latitude": "86.1809210",
        "country_code": "NL"
      },
      "tournament_type": {
        "id": 2,
        "name": "701"
      },
      "tournament_mode": {
        "id": 1,
        "name": "Single"
      },
      "tournament_status": {
        "id": 5,
        "name": "Afgelast"
      }
    }
  ],
  "links": {
    "first": "https://example.com/api/locations/nzDup1Ib6V3J/tournaments?page=1",
    "last": "https://example.com/api/locations/nzDup1Ib6V3J/tournaments?page=1",
    "prev": null,
    "next": null
  },
  "meta": {
    "current_page": 1,
    "from": 1,
    "last_page": 1,
    "links": [
      {
        "url": null,
        "label": "&laquo; Previous",
        "active": false
      },
      {
        "url": "https://example.com/api/locations/nzDup1Ib6V3J/tournaments?page=1",
        "label": "1",
        "active": true
      },
      {
        "url": null,
        "label": "Next &raquo;",
        "active": false
      }
    ],
    "path": "https://example.com/api/locations/nzDup1Ib6V3J/tournaments",
    "per_page": 15,
    "to": 1,
    "total": 1
  }
}

The listview i have gets populated correctly with the datatype tournament I have created.

But when the api request has no values i return a empty data array like so:

{
  "data": [], <--- Issue is here because of datatype iterating
  "links": {
    "first": "https://example.com/api/locations/C1HZKXaPr5eA/tournaments?page=1",
    "last": "https://example.com/api/locations/C1HZKXaPr5eA/tournaments?page=1",
    "prev": null,
    "next": null
  },
  "meta": {
    "current_page": 1,
    "from": null,
    "last_page": 1,
    "links": [
      {
        "url": null,
        "label": "&laquo; Previous",
        "active": false
      },
      {
        "url": "https://example.com/api/locations/C1HZKXaPr5eA/tournaments?page=1",
        "label": "1",
        "active": true
      },
      {
        "url": null,
        "label": "Next &raquo;",
        "active": false
      }
    ],
    "path": "https://example.com/api/locations/C1HZKXaPr5eA/tournaments",
    "per_page": 15,
    "to": null,
    "total": 0
  }
}

Now i get the error:
'type Null' is not a subtype of type 'iterable<TournamentStruct?>' in type cast.

The error is i think caused because there is no tournament data type to iterate over since the data:[] array is empty.

What would the typical way of handling this issue be in flutterflow? Looking at a solution that would not involve in alot of extra code on all the listviews that might have this issue.

Or would predefined json paths be better here?