_routes.json file is present in the out directory. AFAIK, this is a supported way of using Pages (advanced mode + _routes.json to skip having env.ASSETS.fetch in the worker). This error persists even after retrying (previous attempt has the deployment ID 8a1e52ef-257f-4731-a102-c9432d3fd96a)_routes.json, it started working again (deployment eb9d075a-807c-4d2f-92ff-b8a941b8f162). Is this not a supported use case?