php - Laravel session Flash Message Not working

Question

Session message is not working i tried this code and many fix available online Here id my store function `

public function store(Request $request)
    {
        // dd($request->all());
        $this->validate($request, [
            'name'      =>'required',
            'username'  =>'required',
            'email'     =>'required',
            'address'   =>'required',
            'likes'     =>'required',
            'gender'        =>'required'

        ]);

        $input = $request->all();

        Contacts::create($input);

        Session::put('flash_message', 'Task successfully added!');
        return redirect()->back();
    }

And Retrieving by this code

@if(Session::has('flash_message'))
        <div class="alert alert-success">
            {{ Session::get('flash_message') }}
        </div>
@endif

Answer 1

I resolved issue with laravel 6.x

As soon as I moved IlluminateSessionMiddlewareStartSession::class and IlluminateViewMiddlewareShareErrorsFromSession::class from web $middlewareGroups to $middleware in appHttpKernel.php everything started working as expected.