X_AI_MODEL_UNRESOLVED
Means
a model call named no model
Typical cause
neither the declaration, its prompt, nor providerGateway({ defaultModel }) named one — the framework chooses no model for an app
Fix
llm({ ..., model: modelId }) — or model: modelId in its definePrompt, or providerGateway({ ..., defaultModel: modelId }); register the id with registerModel