Interface Builder无法确定“Main.storyboard”的类型。这可能是由于缺少SDK

I am getting a strange error whenever I try to view a particular storyboard of a project in Xcode. When I click the storyboard in the file directory I get an alert that reads "Interface Builder was unable to determine the type of "Main.storyboard". This may be due to a missing SDK."I am getting a strange error whenever I try to