Fatal error: Uncaught TypeError: Twilio\Base\BaseClient::getAccountSid(): Return value must be of type string, null returned in C:\xampp\htdocs\hannoole\POS\vendor\twilio\sdk\src\Twilio\Base\BaseClient.php:365 Stack trace: #0 C:\xampp\htdocs\hannoole\POS\vendor\twilio\sdk\src\Twilio\Rest\Api\V2010.php(128): Twilio\Base\BaseClient->getAccountSid() #1 C:\xampp\htdocs\hannoole\POS\vendor\twilio\sdk\src\Twilio\Rest\Api\V2010.php(276): Twilio\Rest\Api\V2010->getAccount() #2 C:\xampp\htdocs\hannoole\POS\vendor\twilio\sdk\src\Twilio\Rest\Client.php(632): Twilio\Rest\Api\V2010->__get('account') #3 C:\xampp\htdocs\hannoole\POS\vendor\twilio\sdk\src\Twilio\Base\BaseClient.php(280): Twilio\Rest\Client->getMessages() #4 C:\xampp\htdocs\hannoole\POS\vendor\twilio\sdk\example\message.php(18): Twilio\Base\BaseClient->__get('messages') #5 {main} thrown in C:\xampp\htdocs\hannoole\POS\vendor\twilio\sdk\src\Twilio\Base\BaseClient.php on line 365