Fatal error: Uncaught Error: Interface "Anthropic\Middleware" not found in C:\xampp\htdocs\singular_law\vendor\anthropic-ai\sdk\src\Vertex\VertexMiddleware.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\singular_law\vendor\anthropic-ai\sdk\src\Vertex\VertexMiddleware.php on line 15