Fatal error: Uncaught Error: Interface "Anthropic\Lib\Credentials\IdentityTokenProvider" not found in C:\xampp\htdocs\singular_law\vendor\anthropic-ai\sdk\src\Lib\Credentials\IdentityTokenLiteral.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\singular_law\vendor\anthropic-ai\sdk\src\Lib\Credentials\IdentityTokenLiteral.php on line 7