fix some problems

app/Providers/AppServiceProvider.php

@@ -2,6 +2,8 @@
 
 namespace App\Providers;
 
+use App\Interfaces\PackageRepositoryInterface;
+use App\Repositories\PackageRepository;
 use Illuminate\Support\ServiceProvider;
 
 class AppServiceProvider extends ServiceProvider
@@ -13,7 +15,10 @@ class AppServiceProvider extends ServiceProvider
      */
     public function register()
     {
-        
+        $this->app->bind(
+            PackageRepositoryInterface::class,
+            PackageRepository::class
+        );
     }
 
     /**
@@ -22,7 +27,5 @@ class AppServiceProvider extends ServiceProvider
      * @return void
      */
     public function boot()
-    {
-        //
-    }
+    {}
 }