if you have a time machine backup you could restore this folder:
~/Library/Containers/com.sweetpproductions.Invisible

or you could also manually unhide the file(s) like so:
Open Applications/Utilities/Terminal.app
paste in this command:

defaults write com.apple.finder AppleShowAllFiles YES press enter relaunch the finder locate your files

Invisible adds a . to the beginning of your files,
just remove the .

then, undo the changes:

Open Applications/Utilities/Terminal.app paste in this command: defaults write com.apple.finder AppleShowAllFiles NO press enter then relaunch the finder