( ! ) Fatal error: Class 'Symfony\Component\Config\Definition\Builder\NodeBuilder' not found in C:\wamp64\www\simplesamlphp\vendor\symfony\config\Tests\Fixtures\Builder\NodeBuilder.php on line 17
Call Stack
#	Time	Memory	Function	Location
1	0.0066	242680	{main}( )	...\NodeBuilder.php:0