Package development: “Failed to open stream: No such file or directory” when trying to load routes

I’m developping a package, I created all my classes and routes, but when it comes to access my routes, I keep getting the same message :

require(packages/uhgroup/UHTickets-laravel/src/routes/web.php): Failed
to open stream: No such file or directory

I don’t know what I did wrong…

I tried to use the command composer dumpautoload but I get the same error.
In addittion, I get a “Class UHGroupUhTicketsAppLivewireCreateTicket located in C:/Users/lilia/Documents/GitHub/UH-Tickets/vendor/uhgroup/uhtickets-laravel/srcappLivewireCreateTicket.php does not comply with psr-4 autoloading standard. Skipping.” message for every single class I made…
What’s wrong with my namespaces ?

Here are the structure of my files/folders in my project:

and my package’s AppServiceProvider:

<?php

namespace AppProviders;

use IlluminateSupportServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        $this->loadMigrationsFrom("packages/uhgroup/UHTickets-laravel/src/database/migrations");
        $this->loadRoutesFrom("packages/uhgroup/UHTickets-laravel/src/routes");
    }
}

I’m not going to lie, I’m not really sure of the namespace to write when developping a new class in a package.
For instance this is the namespace I put for my models : namespace UHGroupUhTicketsAppModels;