On a particular route am getting PHP Not Found error

Actually, Am facing a strange problem. I have get route named as user in laravel but it's throwing me PHP error Not Found. The strange part is, its not laravel 404 error. its php error.

my, all route is working fine except only this route. I also test on another laravel project , and it's working fine. am just confuse what actually going on with this.

Here is my route inside web.php

Route::get('/user',function(){
    dd('Route Worked');
});

And here is the error

I already tried with php artisan route:clear , Hence it is PHP error so it did nothing

Here is output of php artisan route:list

via Chebli Mohamed