Resolved
This issue has been resolved.
Monitoring
A fix has been deployed and the issue is currently resolved for users, however more fixes are still in-flight to try to prevent the issue from happening in the future.
Identified
We've identified an issue related to publishing to Bolt Hosting. As a temporary workaround users can ask bolt to generate a netlify.toml file for their project. We are actively working with Netlify to resolve the issue.