education-project/app/Exceptions/Handler.php

<?php

namespace App\Exceptions;

use Illuminate\Auth\AuthenticationException;
use Illuminate\Database\Eloquent\ModelNotFoundException;
use Illuminate\Foundation\Exceptions\Handler as ExceptionHandler;
use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException;

class Handler extends ExceptionHandler
{

    public function render($request, \Throwable $exception)
    {
        if ($exception instanceof ModelNotFoundException) {
            return response()->json(['message' => 'Not Found'], 404);
        }

        if ($exception instanceof MethodNotAllowedHttpException) {
            return response()->json(['message' => 'Not Found'], 404);
        }

        //return response()->json(['message' => $exception->getMessage()], 404);
        return parent::render($request, $exception);
    }

    protected function unauthenticated($request, AuthenticationException $exception)
    {
        return response()->json(['message' => 'Unauthenticated'], 401);
    }

    /**
     * A list of the exception types that are not reported.
     *
     * @var array
     */
    protected $dontReport = [
        //
    ];

    /**
     * A list of the inputs that are never flashed for validation exceptions.
     *
     * @var array
     */
    protected $dontFlash = [
        'password',
        'password_confirmation',
    ];

    /**
     * Register the exception handling callbacks for the application.
     *
     * @return void
     */
    public function register()
    {
        //
    }
}