Oh wow, thanks for the prompt reply & thanks for clarifying. The notification gave me the impression that Mitch would automatically be downloading the update if it wasn't causing an error. But yeah, the option to not automatically check for updates would be helpful for those of us who want the entire process to be manual.
Edit: The error says "An error occurred while checking updates". The error is for a game called cityglitch: https://mindfungus.itch.io/cityglitch