add ressource validator

app/UI/VmCreate/Validators/RessourceValidator.php

@@ -15,7 +15,7 @@ class RessourceValidator extends BaseValidator
     {
         $resurceManager = new ResourceManager();
         $additionalSize = 0;
-        $templateName = (int) $additionalData->get('formData')[$this->additionalField];
+        $templateName = (int) $additionalData->get('formData')['osTemplate'];
         $diskResource = $resurceManager ->disk();
 
         logModuleCall(