Hi;
I am facing a problem in Crossref plugin after upgrading from OJS 3.0.1. I have the following error message after clicking submit for any article:
Warning: htmlspecialchars() [function.htmlspecialchars]: charset `UTF=8' not supported, assuming iso-8859-1 in /home/content/29/7935229/html/plugins/importexport/crossref/filter/IssueCrossrefXmlFilter.inc.php on line 113
Warning: Cannot modify header information - headers already sent by (output started at /home/content/29/7935229/html/plugins/importexport/crossref/filter/IssueCrossrefXmlFilter.inc.php:113) in /home/content/29/7935229/html/lib/pkp/classes/core/PKPRequest.inc.php on line 99
I wish to find a solution for this issue. Thanks