I had this happen to me a few times. Not 100% sure how I did it, but I used “restore to previous version” and saved it under a different name so it would load again.
What you can try is to open up the BAK files that might have gotten created with that kitchen file(s). You will go to File and Open. Once in this dialog box you will go to the bottom where it says Files of Type and click on the drop down arrow and select BAK Files. You will notice that your files will be duplicated the second of the two is a BACK UP File (.BAK) If created, try to open your design with this File. If it opens you will save it with the exact File name to overwrite the corrupt File.
When I tried to open the file, it told me there was no file found, and the .BAK file disappeared.
So I just redrew it, thankfully I wasn’t to far in to the drawling.