Should i make a new project or start a new scene

I'm currently making the biggest project I have ever attempted to work on and have run into an error "iterator == end" I found out this is usually corrupted data I found it and removed it. although the scene relied on it and now is permanently inaccessible, even with reimporting every asset I can no longer access it. I can easily remake the scene but should I just start a new scene or make a clean new project to avoid any possible further corruption.