fix: Ignore null values from Toolbox core to fix server error of type validation

Author: anubhav756

packages/toolbox-core/src/toolbox_core/tool.py

@@ -287,6 +287,11 @@ async def __call__(self, *args: Any, **kwargs: Any) -> str:
         for param, value in self.__bound_parameters.items():
             payload[param] = await resolve_value(value)
 
+        # Remove None values to prevent server-side type errors. The Toolbox
+        # server requires specific types for each parameter and will raise an
+        # error if it receives a None value, which it cannot convert.
+        payload = {k: v for k, v in payload.items() if v is not None}
+
         # create headers for auth services
         headers = {}
         for client_header_name, client_header_val in self.__client_headers.items():