fix: fix exception to prevent swallowing unexpected errors

Author: MichaelLi65535

libs/cli/langchain_cli/utils/events.py

@@ -2,6 +2,8 @@
 import json
 from typing import Any, Optional, TypedDict
 
+import typer
+
 WRITE_KEY = "310apTK0HUFl4AOv"
 
 
@@ -37,5 +39,5 @@ def create_events(events: list[EventDict]) -> Optional[Any]:
         res = conn.getresponse()
 
         return json.loads(res.read())
-    except Exception:
-        return None
+    except (http.client.HTTPException, OSError, json.JSONDecodeError) as exc:
+        typer.echo(f"Error sending events: {exc}")