Laravel 5.4 - 路线不存在

I have a simple link on a page to a URL test:

<a href="{{ URL('test')}}" title="test">

In web.php I have defined:

Route::get('test', function(){
    $parts = DB::table('partdetails')->limit(100);
    dd($parts);
    return view('test',compact($parts));
    })->name('test');

I also have a very basic view in the root directory of resources\views call test.blade.php.

When I try this I get

The requested resource /test was not found on this server.

I cannot get this!

A few things come to mind..

1. If you have a wildcard route, move it to the bottom of your routes file.
2. Make sure your .htaccess file is like the one coming with Laravel.
3. Make sure APP_URL in .env is correct
4. If you have Laravel installed in a sub-folder, you should search how to setup that correctly. There are tons of info on the web, easy to find.