Unknown error occurred while loading 'Assets/Scenes/"SceneName".unity'.

i looked a little bit online but i found nothing to help the situation. i saved my unity project and shut my computer off and the next day when i got back on this was the error when i tried to load up my scene. is there any way to fix this or do i need to rebuild my entire scene?

Pull out from the version control system you’re maintaining hopefully. If not, you will have to recreate and set up a version control system right before it. So you can submit your changes and you can maintain working versions.

Also probably it would be good to run a memory- and disk-test on your computer, if it’s a hardware problem, you will see it more in the future maybe with more dire consequences.

ok ill set that up and run a check. iv never had this error and just recently started game dev so i didnt know to set up a system like that

Check out this informative video from Unity itself regarding version control.

https://www.youtube.com/watch?v=ISW2nS_v3Ic