Error in laravel 5.7

Have you registered your middleware and ensured you are passing the variable to the handle function of your middleware?

    public function handle($request, Closure $next, $age)
    {
    if ($age !== 'test') {
            // Redirect...
        }

        return $next($request);
    }

yes did but nothing works. i have already mentioned its working with default parameter. so your question is invalid

@ATISHRAJPUT - Can you please provide the full error message you are getting (please wrap the code in ``` blocks so it is correctly formatted)

IS your code like the docs at https://laravel.com/docs/5.7/middleware#middleware-parameters ?

Are you missing a set of [], looking at the docs it shows the following

Route::group(['middleware' => ['web']], function () {
    //
});

tried everything but nothing works

Route

Route::group(['middleware'=> 'CheckAge:test'], function() { Route::get('welcome', function() { echo 'Atish Kumar'; }); });

tried both way array and non array but nothing works

@ROBSTAR - yes its exactly like as the docs

@ATISHRAJPUT - Are you able to provide the exact error message you are getting. It might help us identify your problem. Can you also share your middleware class and how you have registered it