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I have tried to import the content based on XML file and i had to convert encoding type to UTF-8 to input a greek content. When i did it i got the following error:
Warning: Invalid argument supplied for foreach() in node_export_json_decode_objects() (line 44 of /mnt/www/html/pfwebinarsdev/docroot/sites/all/modules/contrib/node_export/formats/json.inc).
Warning: Invalid argument supplied for foreach() in node_export_drupal_decode_objects() (line 32 of /mnt/www/html/pfwebinarsdev/docroot/sites/all/modules/contrib/node_export/formats/drupal.inc).
Node export was unable to recognize the format of the supplied code. No nodes imported.