how to solve 404 error message in laravel 8 - laravel

Question

i got error 404 while applying route model binding , i am confused where i went wrong, even though i checked route and controller are correct
this is my index coding
```
<h1 class="heading"> product <span>categories</span> </h1>
<div class="box-container">
#foreach($kategori as $k)
<div class="box">
<img src="image/cat-1.png" alt="">
<h3>{{$k->nama_kategori}}</h3>
<p>{{$k->deskripsi_kategori}}</p>
Lihat
</div>
#endforeach
</div>
```
my routes code
<?php
use App\Http\Controllers\HomepageController;
use Illuminate\Support\Facades\Route;
/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/
Route::get('/', [HomepageController::class, 'index']);
Route::get('/{buku:slug}', [HomepageController::class, 'show']);
Route::get('/{kategori:slug_kategori}', [HomepageController::class, 'lihat']);
my controller code
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Models\Buku;
use App\Models\Kategori;
class HomepageController extends Controller
{
public function index() {
return view('homepage/index',[
"title" => "Homepage",
"books" => Buku::all(),
"kategori" => Kategori::all(),
]);
}
public function show(Buku $buku) {
return view('homepage/lihat', [
'title' => 'Detail Buku',
'book' => $buku
]);
}
public function lihat(Kategori $kategori) {
return view('homepage/kategori', [
'title' => $kategori->nama,
'kategoris' => $kategori,
]);
}
}
kategori migration
<?php
use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
return new class extends Migration
{
/**
* Run the migrations.
*
* #return void
*/
public function up()
{
Schema::create('kategoris', function (Blueprint $table) {
$table->id();
$table->string('kode_kategori')->unique();
$table->string('nama_kategori')->unique();
$table->string('slug_kategori');
$table->text('deskripsi_kategori');
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* #return void
*/
public function down()
{
Schema::dropIfExists('kategoris');
}
};
and file views structure
file views structure
i got error 404 while applying route model binding , i am confused where i went wrong, even though i checked route and controller are correct

Answer 1

Try this artisan command
php artisan config:clear
php artisan route:clear

Answer 2

What's the route that shows a 404 page?, maybe it's because of the cache, try these commands:
for clear route cache: $ php artisan route:clear
for clear all cache app: $ php artisan optimize:clear