Using Swift I got the error that my \"TableViewController\" is unreachable because it has no entry points and no runtime access via [UIStoryboard instantiateViewControllerWithId
I'd reached the same error. This answer would be useful, I think: Xcode: "Scene is unreachable due to lack of entry points" but can't find it
The problem was that because of some experiments and copy-pasting I had an actual copy of a view controller located outside the visible part of the screen or it could be stacked exactly on top of its twin. So I just deleted unwanted one :-) You should open Document Outline and сheck for copies :-)