Fatal error: Uncaught Error: Interface 'Negotiation\Exception\Exception' not found in /home/itscm/dev.its.cm/itsgateway/vendor/willdurand/negotiation/src/Negotiation/Exception/InvalidArgument.php:5 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/itsgateway/vendor/willdurand/negotiation/src/Negotiation/Exception/InvalidArgument.php on line 5