Stealing @martin-baulig’s answer:
Try a full rebuild / clean. It’s possible that the previous build has been abnormally aborted, leaving the TWRAppDelegate.o file corrupted or zero-size.
Stealing @martin-baulig’s answer:
Try a full rebuild / clean. It’s possible that the previous build has been abnormally aborted, leaving the TWRAppDelegate.o file corrupted or zero-size.