It's not a big thing, but it happens a lot! On Mac OS X there's an invisible file in every directory (.DS_Store) that is updated by the OS whenever you interact with files in the Finder. As a result, simple interactions with files trigger a CLI Sync error: [TIMESTAMP] [Sync] Not syncing, file extension if now allowed: marketplace_builder/views/partials/layouts/modules/module_14/.DS_Store
I just opened a folder in the Finder. Nothing bad happens. It just presents a bunch of needless red error messages.
Anyway, if there's an exclusion file within the CLI, I'd vote to add that file type/extension to the ignore list.