The constructor of TransactionalSMSApi should be fixed the same way you fixed TransactionalEmailApi to be compatible with php 8.4. ``` public function __construct( ?ClientInterface $client = null, ?Configuration $config = null, ?HeaderSelector $selector = null ) { $this->client = $client ?: new Client(); $this->config = $config ?: new Configuration(); $this->headerSelector = $selector ?: new HeaderSelector(); } ```