·9 min read
'NoneType' object is not subscriptable: The cloudpickle Bug That Eats Agent Deploys
A postmortem. The deploy succeeds, the agent goes live, and every query returns nothing — or a type error from deep inside a framework you did not write. The cause is a serialisation boundary nobody told you existed, and the fix is two lines.
·11 min read
Deploying to Vertex AI Agent Engine: The Guide the Docs Skip
Agent Engine will host your agent without you writing a server, managing sessions, or provisioning anything. Getting there means understanding four things the documentation mentions in passing and that account for most failed first deploys.