Build xCode iOS error

I had a problem with my two projects during the build in xCode. Both projects were update with Unity 4.6 to Unity 5.1.3 p1. If the project is to compile in Mono2x - all good, but if IL2CPP, provides just such an error (screenshot). If the project was originally created in Unity 5, then build in xCode is successful.
Can you please tell me what to do? I can not do update the App Store.