Not able to export nodes from one drupal site to other drupal site? I have 2 instances of same drupal project, where contents are different. I want to export contents from one drupal site to other drupal site.
I tried content syn module:
      I Was not able import single node having file field value.
    node_export module:
       Not able to import node

Anyone is having any idea, which is the best approach to transfer the contents between 2 drupal sites?

Error when tried with content sysn module:
Symfony\Component\Serializer\Exception\InvalidArgumentException: No "file" entity found with UUID "514d82d9-e933-4be6-9dfb-3435b58d3531" for field "0". in Drupal\content_sync\Normalizer\EntityReferenceFieldItemNormalizer->constructValue() (line 88 of /var/www/html/drupal8/modules/contrib/content_sync/src/Normalizer/EntityReferenceFieldItemNormalizer.php).
When using content_sync module, you must set the content_sync directory in your settings.php file.

From module description:


  Set the export directory in settings.php. Similar to configuration management, we want to set the export directory for YAML files using the settings.php file.le:
  Use the variable: $content_directories['sync']
  ie:

global $content_directories;

$content_directories['sync'] = '/../content/sync';

  
  Note: set $content_directories as global