Laravel how to download txt file from database - laravel

Question

I am working on laravel mini project, I have couple small issues, but this one is pretty tricky, I checked all possible solution, nothing worked.
When I click on download, downloading process starts, but then I got message in Failed - Server Problem.
I would like download file named in format name-last_name.txt, incase there are two people with the same name name-last_name/2.txt
If you can share with me any knowledge is the correct process of it, I will appreciate a lot
Controller
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use Storage;
use App\Client;
class FormsController extends Controller
{
/**
* Display a listing of the resource.
*
* #return \Illuminate\Http\Response
*/
public function index()
{
//
$clients = Client::all();
return view('/index')->with('clients', $clients);
}
/**
* Show the form for creating a new resource.
*
* #return \Illuminate\Http\Response
*/
public function create()
{
//
return view ('create');
}
/**
* Store a newly created resource in storage.
*
* #param \Illuminate\Http\Request $request
* #return \Illuminate\Http\Response
*/
public function store(Request $request)
{
//
$this->validate($request, [
'name' => 'required',
'last_name' => 'required',
'phone'=> 'required',
'agree'=> 'required'
]);
$client = new Client;
$client->name = $request->input('name');
$client->last_name = $request->input('last_name');
$client->phone = $request->input('phone');
$client->call_time = $request->input('call_time');
$client->agree = $request->input('agree');
$client->save();
return redirect('/')->with('success', 'Klient vytvořen');
}
/**
* Display the specified resource.
*
* #param int $id
* #return \Illuminate\Http\Response
*/
public function show($id)
{
//
$client = Client::find($id);
return view ('show')->with('client', $client);
}
public function download(){
$client = Client::find($id);
return response()->download($pathToFile);
}
}
Blade File is
#extends('layout')
#section('content')
<div class="row">
<div class="col-9 mt-5">
<h1>Seznam klientů</h1>
</div>
<div class="col-3 mt-5">
<h6>Nový klient</h6>
</div>
</div>
<div class="container">
#if(count($clients)>0)
<ul class="list-group">
<table class="table">
#foreach($clients as $client)
<table class="table">
<thead>
<tr>
<th scope="col">#</th>
<th scope="col">Jméno</th>
<th scope="col">Příjmení</th>
<th scope="col">Telefonní číslo</th>
<th scope="col">Provolaný čas</th>
<th scope="col">Souhlas</th>
<th scope="col">Stahnout data</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row"> </th>
<td>{{$client->name}}</td>
<td>{{$client->last_name}}</td>
<td>{{$client->phone}}</td>
<td>{{$client->call_time}}</td>
<td>{{$client->agree}}</td>
<td><a href="download/{{$client->name}}"
download="{{$client->name}}">
<button type="button" class="btn btn-
primary">
Download
</button>
</a></td>
</tr>
</tbody>
</table>
#endforeach
</ul>
#else
<p>Seznam je prázdny</p>
#endif
</div>
#endsection
Route
Route::resource('/', 'FormsController');
Route::get('/{$id}', 'FormsController#download');