fix https

Author: Yue Deng

libs/miroflow/src/miroflow/llm/providers/claude_anthropic_client.py

@@ -41,8 +41,8 @@ def _create_client(self, config: DictConfig):
         trace_id = get_trace_id()
         if trace_id is not None:
             http_client_args["headers"] = {"trace-id": trace_id}
-        if not OmegaConf.is_missing(config, "https_proxy"):
-            http_client_args["proxy"] = config.env.https_proxy
+        if (proxy := config.get("env.https_proxy", "???")) != "???":
+            http_client_args["proxy"] = proxy
             logger.debug(f"Info: Using proxy {http_client_args['proxy']}")
 
         if self.async_client: