prevent type error

src/Application/Controller/Admin/d3totpadminlogin.php

@@ -147,7 +147,7 @@ class d3totpadminlogin extends AdminController
         $userId = $user->d3TotpGetCurrentUser();
 
         try {
-            $sTotp = implode('', Registry::getRequest()->getRequestEscapedParameter('d3totp'));
+            $sTotp = implode('', Registry::getRequest()->getRequestEscapedParameter('d3totp', []));
 
             $totp = $this->d3TotpGetTotpObject();
             $totp->loadByUserId($userId);

src/Modules/Application/Component/d3_totp_UserComponent.php

@@ -84,7 +84,7 @@ class d3_totp_UserComponent extends d3_totp_UserComponent_parent
      */
     public function d3TotpCheckTotpLogin()
     {
-        $sTotp = implode('', Registry::getRequest()->getRequestEscapedParameter('d3totp'));
+        $sTotp = implode('', Registry::getRequest()->getRequestEscapedParameter('d3totp', []));
 
         /** @var d3_totp_user $oUser */
         $oUser = oxNew(User::class);

src/tests/unit/Modules/Application/Controller/Admin/d3_totp_LoginControllerTest.php

@@ -13,7 +13,6 @@
 
 namespace D3\Totp\tests\unit\Modules\Application\Controller\Admin;
 
-use D3\TestingTools\Development\IsMockable;
 use D3\TestingTools\Development\CanAccessRestricted;
 use D3\Totp\Application\Model\d3totp;
 use D3\Totp\Application\Model\d3totp_conf;
@@ -28,7 +27,6 @@ use ReflectionException;
 class d3_totp_LoginControllerTest extends d3TotpUnitTestCase
 {
     use CanAccessRestricted;
-    use IsMockable;
 
     /** @var d3_totp_LoginController */
     protected $_oController;

src/tests/unit/Modules/Application/Controller/d3_totp_getUserTestTrait.php

@@ -13,7 +13,6 @@
 
 namespace D3\Totp\tests\unit\Modules\Application\Controller;
 
-use D3\TestingTools\Development\IsMockable;
 use D3\TestingTools\Development\CanAccessRestricted;
 use D3\Totp\Application\Model\d3totp;
 use D3\Totp\Modules\Application\Controller\d3_totp_OrderController;