Laravel 5 - Interface is not instantiable

Thank you everyone, but problem was in my AppRepositoryProvider. As it's binding exception, then obviously the problem was with binding :)

Correct file is:

<?php namespace App\Providers;use Illuminate\Support\ServiceProvider;class AppRepositoryProvider extends ServiceProvider {    public function boot() {}    public function register() {        $models = array(            'CustomModel',            'CustomModel2',            'CustomModel3'        );        foreach ($models as $model) {            $this->app->bind("App\Contracts\\{$model}Interface", "App\Repositories\\{$model}Repository");        }    }}

Note, that I'm using "App\Contracts\\{$model}Interface" (not escaping "{" symbol) and it generate correct string App\Contracts\CustomModelInterface instead of App\Contracts\{$model}Interface (with unexpected escaping).

Every time I create a new repository/contract pair I make sure I do the following:

1. check the classes used in the service provider (copy/paste the namespaces)
2. register a new binding in config/app.php
3. php artisan optimize

Many hours of useless debugging led me to this short checklist.

For me, I forgot to bind in app->providers->RepositoryServiceProviderthe repository like this in the register method

public function register(){    $this->app->bind(        \App\Play\Contracts\PatientRepository::class,        \App\Play\Modules\PatientModule::class    );}

Make sure your RepositoryServiceProvider is registered in AppServiceProvider.

public function register(){       $this->app->register(RepositoryServiceProvider::class);}