> ## Documentation Index
> Fetch the complete documentation index at: https://docs.decktalk.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# PAGE_RUNTIME_STALE

> The project's copy of the runtime is not the one this engine ships, so its pages play a contract this engine does not measure.

The project's copy of the runtime is not the one this engine ships, so its pages play a contract this engine does not measure.

This finding is certain, and DeckTalk measures it from what the run produced.
Pass `--allow PAGE_RUNTIME_STALE` to carry on past it, and `--fail-on` to choose which certainty fails a run.