Fatal error: Uncaught Error: Interface "Psr\Http\Client\ClientInterface" not found in C:\xampp\htdocs\singular_law\vendor\anthropic-ai\sdk\src\Core\Implementation\StreamingHttpClient.php:17 Stack trace: #0 {main} thrown in C:\xampp\htdocs\singular_law\vendor\anthropic-ai\sdk\src\Core\Implementation\StreamingHttpClient.php on line 17