Api/v1 does not exist in config when running php artisan serve - php

Question

I would like to build an API that does a GET request to a third party API. I created a controller that houses this logic and registered this as an HTTP end point using the JsonApiRoute::server() facade. I am absolutely new to Laravel and PHP.
However when I run php artisan serve I get the error:
Server /api/v1 does not exist in config or is not a valid class.
This is my code in routes:
JsonApiRoute::server('/api/v1')
->prefix('/api/v1')
->resources(function ($server) {
$server->resource('retrieve');
});
This is the code I have in config-> json-api-default:
return [
'resolver' => \CloudCreativity\LaravelJsonApi\Resolver\ResolverFactory::class,
'namespace' => null,
'by-resource' => true,
'model-namespace' => null,
'resources' => [
'posts' => \App\Post::class,
],
'use-eloquent' => true,
'url' => [
'host' => null,
'namespace' => '/api/v1',
'name' => 'api:v1:',
],
'controllers' => [
'transactions' => true,
'connection' => null,
],
'jobs' => [
'resource' => 'queue-jobs',
'model' => \CloudCreativity\LaravelJsonApi\Queue\ClientJob::class,
],
'encoding' => [
'application/vnd.api+json',
],
'decoding' => [
'application/vnd.api+json',
],
'providers' => [],
];
and in my controller:
namespace App\Http\Controllers;
use Illuminate\Http\Request;
class retrieve extends Controller
{
//
public function retrieveData(Request $request){
$response = Http::withHeaders([
'api-key' => '***',
])->get('https://data.mongodb-api.com/app/data-pkrpq/endpoint/getRandom');
return response()->json(['status'=> true,'data'=> json_decode($response->body()), 'Message'=>'Successfully retrieved'], 200);
}
}