Checking system Node.js version - found v16.15.0
Ensuring user is not logged in as ghost user [skipped]
Checking if logged in user is directory owner [skipped]
Checking current folder permissions
Validating config
Checking content folder ownership
Checking memory availability
Checking binary dependencies
One or more errors occurred.
config.{env}.json files are for your Ghost instance, and can contain secrets! You should almost never upload it to a site, and if you’re ever pasting it somewhere (like this forum), you should redact all secrets like @mjw mentioned
Themes can be uploaded to many Ghost instances, and most if not all of the data can be publicly shared (assuming the license allows it). They can be uploaded to gscan to validate the package.json, among several other things.