[!] Error: Package subpath './compiler.js' is not defined by "exports"

[craigboman]

Running npm run demo:autobuild results in a something like an outdated npm package for rollup-plugin-svelte. Updating it from ^5.2.1 to 6.1.1 seems to resolve the outdated package but results in the following error which I'm not sure how to resolve.

[!] Error: Package subpath './compiler.js' is not defined by "exports"

Any ideas?