Fatal error: Uncaught Error: Class "Anthropic\Core\BaseClient" not found in C:\xampp\htdocs\singular_law\vendor\anthropic-ai\sdk\src\Bedrock\MantleClient.php:40 Stack trace: #0 {main} thrown in C:\xampp\htdocs\singular_law\vendor\anthropic-ai\sdk\src\Bedrock\MantleClient.php on line 40