Laravel - Api return laravel version - closed without sending a request it was probably just an unused speculative preconnection

I have a problem with my API on laravel. I created a SupportController that i've added to my routes/api.php

My controller :

<?php

namespace App\Http\Controllers;

use App\Http\Requests\SupportRequest;

class SupportController extends Controller
{
    public function store(SupportRequest $request) {
      if($request->validate())
      {
        return response()->json('success', 200);
      } else {
        return response()->json('error', 400);
      }
    }
}

My routes :

Route::post('/support', [SupportController::class, 'store']);

And postman return :

{
    "Laravel": "8.83.18"
}

Actually, i tryied to fix my cache using php artisan cache:clear and php artisan route:clear.

I got this message in my server console:

closed without sending a request it was probably just an unused speculative preconnection

Edit: Here is my supportRequest:

<?php

namespace App\Http\Requests;

use Illuminate\Foundation\Http\FormRequest;

class SupportRequest extends FormRequest
{
    /**
     * Determine if the user is authorized to make this request.
     *
     * @return bool
     */
    public function authorize()
    {
        return true;
    }

    /**
     * Get the validation rules that apply to the request.
     *
     * @return array
     */
    public function rules()
    {
        return [
            'message' => ['required', 'min:10']
        ];
    }
}