Lae/app/Http/Middleware/JsonResponse.php

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;

class JsonResponse
{
    /**
     * Handle an incoming request.
     *
     * @param \Illuminate\Http\Request                                                                          $request
     * @param \Closure(\Illuminate\Http\Request): (\Illuminate\Http\Response|\Illuminate\Http\RedirectResponse) $next
     *
     * @return \Illuminate\Http\Response|\Illuminate\Http\RedirectResponse
     */
    public function handle(Request $request, Closure $next)
    {
        // accept json
        $request->headers->set('Accept', 'application/json');

        // set json response
        return $next($request);
    }
}