Common failure modes

Most failures happen at one of six stages:

component release -> graph validation -> file/model binding -> proof -> deployment -> runtime

Start with the stage where the symptom appears. The platform validates the graph for you as you edit it and again at deploy time, so graph-stage problems arrive as issue codes rather than something you check by hand.

Fast Triage

ppl deployment listCopyppl deployment containers <deployment_id>Copyppl deployment logs --container <container_id>Copy

Frequent Causes

Stage	Common cause
Component release	Missing component.yml, wrong build system, dependency conflict, bad type/config declaration.
Graph validation	Missing input edge, incompatible types, missing required file, missing required parameter.
File/model binding	Wrong upload type, wrong file key, pre-tarred Triton model, file config overwrote params.
Proof	Valid shape but wrong semantic output, missing labels/tokenizer/preprocessing, zero-frame replay, generated files written but never committed (the run committed no files).
Deployment	No runtime capacity, cold model load, endpoint minted before worker listens.
Runtime	Component crash, missing file/secret, model load failure, wrong container inspected.

For model and data work, do not stop at clean graph validation. Run representative fixtures and record observed output, container logs, and mismatch risks.

A component that produces files must commit each finished file to its slot's commit URL; a file it only writes to disk is never saved. When a lease collect reports the run committed no files, the component never committed — see File schema for the commit contract.

Related

• Prove backend behavior - turn a run into evidence.
• File upload and backend binding - fix model/data artifact binding.
• File types - the file_type mismatch that rejects a bind.
• Deploy and monitor - inspect deployments, containers, and logs.