diff --git a/composer.json b/composer.json
index 025b9e4..e632a35 100644
--- a/composer.json
+++ b/composer.json
@@ -21,8 +21,8 @@
     },
     "require": {
         "php": ">=7.0.0",
-        "illuminate/support": "5.8.*||^6.0",
-        "laravel/browser-kit-testing": "^5.0"
+        "illuminate/support": "5.8.*||^6.0||^7.0",
+        "laravel/browser-kit-testing": "^5.0||^6.0"
     },
     "require-dev": {
         "orchestra/testbench": "~3.0"
diff --git a/src/GeneratorCommand.php b/src/GeneratorCommand.php
index 805aa46..b8dced3 100644
--- a/src/GeneratorCommand.php
+++ b/src/GeneratorCommand.php
@@ -2,15 +2,13 @@
 
 namespace Luthfi\CrudGenerator;
 
-use Illuminate\Support\Str;
 use Illuminate\Console\Command;
+use Illuminate\Container\Container;
 use Illuminate\Filesystem\Filesystem;
-use Illuminate\Console\DetectsApplicationNamespace;
+use Illuminate\Support\Str;
 
 class GeneratorCommand extends Command
 {
-    use DetectsApplicationNamespace;
-
     /**
      * The injected Filesystem class
      *
@@ -130,4 +128,9 @@ class GeneratorCommand extends Command
             resource_path('views/'.str_replace('.', '/', config('simple-crud.default_layout_view')).'.blade.php')
         );
     }
+
+    protected function getAppNamespace()
+    {
+        return Container::getInstance()->getNamespace();
+    }
 }
diff --git a/src/Generators/BaseGenerator.php b/src/Generators/BaseGenerator.php
index d129a0d..e532ffd 100644
--- a/src/Generators/BaseGenerator.php
+++ b/src/Generators/BaseGenerator.php
@@ -2,18 +2,16 @@
 
 namespace Luthfi\CrudGenerator\Generators;
 
+use Illuminate\Container\Container;
 use Illuminate\Filesystem\Filesystem;
-use Luthfi\CrudGenerator\GeneratorCommand;
-use Illuminate\Console\DetectsApplicationNamespace;
 use Luthfi\CrudGenerator\Contracts\Generator as GeneratorContract;
+use Luthfi\CrudGenerator\GeneratorCommand;
 
 /**
  * Base Generator Class
  */
 abstract class BaseGenerator implements GeneratorContract
 {
-    use DetectsApplicationNamespace;
-
     /**
      * The injected Filesystem class
      *
@@ -130,4 +128,9 @@ abstract class BaseGenerator implements GeneratorContract
     {
         return $this->command->getName() == 'make:crud-api';
     }
+
+    protected function getAppNamespace()
+    {
+        return Container::getInstance()->getNamespace();
+    }
 }
diff --git a/src/stubs/testcases/feature/api.stub b/src/stubs/testcases/feature/api.stub
index c32bc5d..ea35101 100644
--- a/src/stubs/testcases/feature/api.stub
+++ b/src/stubs/testcases/feature/api.stub
@@ -70,7 +70,7 @@ class ManageMasterTest extends TestCase
         );
 
         $this->seeStatusCode(422);
-        $this->seeJsonSubset(['errors' => ['name' => []]]);
+        $this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -87,7 +87,7 @@ class ManageMasterTest extends TestCase
         );
 
         $this->seeStatusCode(422);
-        $this->seeJsonSubset(['errors' => ['name' => []]]);
+        $this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -104,7 +104,7 @@ class ManageMasterTest extends TestCase
         );
 
         $this->seeStatusCode(422);
-        $this->seeJsonSubset(['errors' => ['description' => []]]);
+        $this->seeJsonStructure(['errors' => ['description']]);
     }
 
     /** @test */
@@ -169,7 +169,7 @@ class ManageMasterTest extends TestCase
         );
 
         $this->seeStatusCode(422);
-        $this->seeJsonSubset(['errors' => ['name' => []]]);
+        $this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -187,7 +187,7 @@ class ManageMasterTest extends TestCase
         );
 
         $this->seeStatusCode(422);
-        $this->seeJsonSubset(['errors' => ['name' => []]]);
+        $this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -205,7 +205,7 @@ class ManageMasterTest extends TestCase
         );
 
         $this->seeStatusCode(422);
-        $this->seeJsonSubset(['errors' => ['description' => []]]);
+        $this->seeJsonStructure(['errors' => ['description']]);
     }
 
     /** @test */
diff --git a/tests/Generators/Api/ApiFeatureTestGeneratorTest.php b/tests/Generators/Api/ApiFeatureTestGeneratorTest.php
index 7696f7b..a93c1fe 100644
--- a/tests/Generators/Api/ApiFeatureTestGeneratorTest.php
+++ b/tests/Generators/Api/ApiFeatureTestGeneratorTest.php
@@ -84,7 +84,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['name' => []]]);
+        \$this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -101,7 +101,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['name' => []]]);
+        \$this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -118,7 +118,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['description' => []]]);
+        \$this->seeJsonStructure(['errors' => ['description']]);
     }
 
     /** @test */
@@ -183,7 +183,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['name' => []]]);
+        \$this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -201,7 +201,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['name' => []]]);
+        \$this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -219,7 +219,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['description' => []]]);
+        \$this->seeJsonStructure(['errors' => ['description']]);
     }
 
     /** @test */
@@ -329,7 +329,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['name' => []]]);
+        \$this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -346,7 +346,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['name' => []]]);
+        \$this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -363,7 +363,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['description' => []]]);
+        \$this->seeJsonStructure(['errors' => ['description']]);
     }
 
     /** @test */
@@ -428,7 +428,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['name' => []]]);
+        \$this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -446,7 +446,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['name' => []]]);
+        \$this->seeJsonStructure(['errors' => ['name']]);
     }
 
     /** @test */
@@ -464,7 +464,7 @@ class Manage{$this->model_name}Test extends TestCase
         );
 
         \$this->seeStatusCode(422);
-        \$this->seeJsonSubset(['errors' => ['description' => []]]);
+        \$this->seeJsonStructure(['errors' => ['description']]);
     }
 
     /** @test */