You will encounter this error while adding a new LaunchScreen.xib file into your project.
To resolve this is super easy!. You may need to remove the & in your Organization Name, just incase you have it.
- Select the Project in the Project Navigator
- On the right hand side pane (the File Inspector), under Project Document remove any special characters from the Organization Name.
And after correcting the Organization Name, remove the Launch Screen.xib file and re-add it to your project.