ios - Installation Failed "Invalid argument" when trying to run Today application extension

Question

I added a vanilla Today Application Extension and run with the new scheme created by XCode.
After it finishes building ("Build Succeeded" pops up), it failed straight away with this error:

Installation Failed
Invalid argument

I've been trying to find answers for 6 hours now, no luck so far. Please help!

Answer 1

Check if the Bundle Identifier isn't empty in the Info.plist