update

app/Http/Facade/SignRSA.php

@@ -2,12 +2,13 @@
 
 namespace App\Http\Facade;
 
+use App\Http\Services\SignRSA as SignRSAService;
 use Illuminate\Support\Facades\Facade;
 
 class SignRSA extends Facade
 {
     protected static function getFacadeAccessor()
     {
-        return 'signrsa';
+        return SignRSAService::class;
     }
 }