Laravel Class 'Mike42\Escpos\PrintConnectors\FilePrintConnector' not found

I am building an application that uses thermal printer and I found the Mike42/Escpos library.

I am using laravel for my application

I have installed the library in my application

but I am getting the following error.

Class 'Mike42\Escpos\PrintConnectors\FilePrintConnector' not found

Composer.json

{
   "require": {
       "spatie/laravel-backup": "^6.11",
       "mike42/escpos-php": "^3.0"
   }
}

Web.php

use Illuminate\Support\Facades\Route;
use Mike42\Escpos\PrintConnectors\FilePrintConnector;
use Mike42\Escpos\Printer;
Route::get('/', function () {
   $connector = new FilePrintConnector("XP-58IIH");
   $printer = new Printer($connector);
   $printer -> text("Hello World!\n");
   $printer -> cut();
   $printer -> close();
});

How do I solve this problem?

via Chebli Mohamed