Fatal error: Uncaught Error: Class "EasyRdf\RdfNamespace" not found in /home/www/aes-demo/api-8.0.0#316/vendor/sweetrdf/easyrdf/lib/Literal.php:145 Stack trace: #0 /home/www/aes-demo/api-8.0.0#316/vendor/sweetrdf/easyrdf/lib/Literal.php(328): EasyRdf\Literal::setDatatypeMapping('xsd:boolean', 'EasyRdf\\Literal...') #1 {main} thrown in /home/www/aes-demo/api-8.0.0#316/vendor/sweetrdf/easyrdf/lib/Literal.php on line 145