Posts

Post not yet marked as solved
40 Replies
I was facing the same problem in Xcode 10.2.1.After days trying to solve it, I discovered that in my case this error was caused by a Swift class that inherits an Objective-C Third Party class (more specifically the FSCalendarCell class from https://github.com/WenchaoD/FSCalendar).I rewrote the Swift class for Objective-C and it compiled and ran without any issues.