Fatal error: Uncaught Error: Class 'Twilio\Rest\PreviewBase' not found in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\會員外掛\user-registration-pro\vendor\twilio\sdk\src\Twilio\Rest\Preview.php:6 Stack trace: #0 {main} thrown in D:\www\wordpress - 安裝環境+外掛測試\02.外掛程式\會員外掛\user-registration-pro\vendor\twilio\sdk\src\Twilio\Rest\Preview.php on line 6