Fatal error: Uncaught Twilio\Exceptions\ConfigurationException: Credentials are required to create a Client in C:\www\api\vendor\twilio\sdk\src\Twilio\Base\BaseClient.php:70 Stack trace: #0 C:\www\api\vendor\twilio\sdk\example\messaging_bulk.php(9): Twilio\Base\BaseClient->__construct('', '') #1 {main} thrown in C:\www\api\vendor\twilio\sdk\src\Twilio\Base\BaseClient.php on line 70