i once did that. i formatted my 1tb hard drive that has all of my game files, photos and much more on it. took nearly a week of using cheap file recovery tools to fix that error.
I didn't have to do any of that luckily, i had an older version of beam installed on my HDD and it backed itself up in the documents and for some reason the wagon was in there.
Life protip: Always keep a backup of your projects. You can use GitHub, Dropbox, anything really. As long as you have a second copy that is up-to-date somewhere.
removed 2 nodes and SO much better --- Post updated --- putting latest version up for download! Enjoy! --- Post updated --- latest file up with configs, pictures, and descriptions