Fatal error: Uncaught Error: Class 'BirknerAlex\XMPPHP\XMPP' not found in /home/junior47895/public_html/aulavirtual/AulaVirtual_22Apr/lib/jabber/XMPP/BOSH.php:44 Stack trace: #0 {main} thrown in /home/junior47895/public_html/aulavirtual/AulaVirtual_22Apr/lib/jabber/XMPP/BOSH.php on line 44