I couldn’t find an answer to my problem. If It could be a similar subject about the issue, I am sorry that. I have a problem with import/export with Crossref. When I tried an article to deposit, a Notification window pop up:
“Registration was not fully successful! The DOI registration server returned an error.”
Following that, I checked the error log, I saw a problem related to the Plugin as seen below. How can solve the problem?
PHP Warning: DOMDocument::loadXML(): Empty string supplied as input in /home/jstem/public_html/plugins/importexport/crossref/CrossRefExportPlugin.inc.php on line 308