Small issue in web.php after generation

[jigzstar]

For some reason the namespace below defaults to App\Http\Controllers\Admin

Route::prefix('admin')->namespace('App\Http\Controllers\Admin')->name('admin/')

Which throws an error:
Target class [App\Http\Controllers\App\Http\Controllers\Admin\Controller name not found.

Fixes:

Route::prefix('admin')->namespace('\App\Http\Controllers\Admin')->name('admin/')

OR

Route::prefix('admin')->namespace('Admin')->name('admin/')