My Stencil theme won’t build or activate, can you fix it?

Yes. stencil bundle or stencil push failures (“Could not activate theme”, webpack/BrowserSync build errors, a broken config.json, or a missing dependency in package.json) are one of our most common BigCommerce fixes. We reproduce the build locally with Stencil CLI, read the actual build log, fix the offending template or config, and push a clean bundle. The theme deploys through Git so you can roll back any version.