( ! ) Fatal error: Interface 'Symfony\Component\EventDispatcher\EventDispatcherInterface' not found in C:\wamp64\www\pws_product\sendgrid-php\vendor\symfony\event-dispatcher\Debug\TraceableEventDispatcherInterface.php on line 19
Call Stack
#TimeMemoryFunctionLocation
10.0000359840{main}( )...\TraceableEventDispatcherInterface.php:0