After performing the update OJS 2.4.8 we are not able to run the export plugin Crossref in XML, with the error message:
“Fatal error: Using $this when not in object context in /home/seer/ojs-2.3.5/plugins/importexport/crossref/CrossRefExportPlugin.inc.php(217) : runtime-created function on line 1”.
I ask, any tips to solve this problem?
Thank’s