So me and some friends working on a bitbucket project and already realized that bitbucket sometimes doesn't sync all the files. But here is what happened:
I continued working and created an class, I basically copied an old View Controller (called WelcomescreenViewController.swift -> CreateAccountViewController.swift) and made some adjustments in the main storyboard. Here I deleted all the old outlets in the new one and then made an own class for it as ViewController and connected it with it in the main storyboard.
What now happened is that there were some problems and I reverted everything and deleted both things again. And basically now Xcode still kind of thinks that there should be the class. It always drops the message:
I also made a screenshot from the directory with my files as it is now:
I tried to create the class again, so that Xcode is happy but it doesn't help. Is the file somewhere linked or what shall I do, to teach Xcode hey everything is fine, don't mind about the old file CreateAccountViewController.swift?
Make sure in your target settings, under Build Phases > Compile Sources that your file isn't listed there:
Also, just check it somehow hasn't been added to Copy Bundle Resources.
If you're developing a pod, and the deleted file is in the pod, try pod install to rebuild the framework.
Check if the deleted files are still in Project, if yes, delete. build ...
来源：https://stackoverflow.com/questions/34844782/deleted-class-drops-error-message-unknown0-error-no-such-file-or-directory