
<br />
<b>Fatal error</b>:  Uncaught ValueError: mb_internal_encoding(): Argument #1 ($encoding) must be a valid encoding, &quot;&quot; given in /www/wwwroot/journal.ar-raniry.ac.id/ojs/lib/pkp/classes/core/PKPString.inc.php:61
Stack trace:
#0 /www/wwwroot/journal.ar-raniry.ac.id/ojs/lib/pkp/classes/core/PKPString.inc.php(61): mb_internal_encoding()
#1 /www/wwwroot/journal.ar-raniry.ac.id/ojs/lib/pkp/classes/core/PKPApplication.inc.php(161): PKPString::init()
#2 /www/wwwroot/journal.ar-raniry.ac.id/ojs/lib/pkp/includes/bootstrap.inc.php(60): PKPApplication-&gt;__construct()
#3 /www/wwwroot/journal.ar-raniry.ac.id/ojs/index.php(60): require('...')
#4 {main}
  thrown in <b>/www/wwwroot/journal.ar-raniry.ac.id/ojs/lib/pkp/classes/core/PKPString.inc.php</b> on line <b>61</b><br />