lldb class has incompatible superclass

ios objective-c xcode lldb

Try this one:

Select your project in the left project navigator.
Switch to the Build Settings tab.
Search for Debug Information Format.
Set the value for Debug to DWARF.
Clean Build Folder: hold Option + Command + Shift + K (That is ⌥ + ⌘ + ⇧ + K).
Rebuild your project: ⌘ + R.

Good luck.