Fatal error: Uncaught Error: Class "Negotiation\AbstractNegotiator" not found in D:\htdocs\SuiteCRM\vendor\willdurand\negotiation\src\Negotiation\EncodingNegotiator.php:5 Stack trace: #0 {main} thrown in D:\htdocs\SuiteCRM\vendor\willdurand\negotiation\src\Negotiation\EncodingNegotiator.php on line 5