( ! ) Fatal error: Interface 'Symfony\Component\EventDispatcher\Debug\TraceableEventDispatcherInterface' not found in C:\wamp64\www\pws_product\sendgrid-php\vendor\symfony\event-dispatcher\Debug\TraceableEventDispatcher.php on line 27
Call Stack
#TimeMemoryFunctionLocation
10.0000412632{main}( )...\TraceableEventDispatcher.php:0