Curious if this is still happening for you? Either way would definitely need more info on your setup to help you resolve the error:
`fatal: no new revisions were found`
Sometimes this happens because git is not aware of your /dist folder to allow you to push your changes, OR that there were no changes found between your gh-pages branch and your dist folder.
My assumption is that its more likely to be the latter, you could dry deleting your gh-pages branch locally and remotely and try running the command again.
At the end of the day the goal of that command is to grab your /dist folder and push it up to a separate gh-pages branch.