EXPORT FAILED on iOS build after update to Ionic 3

Both errors (you only posted the last one in your first post) turned up several times here in the forum in the last few days, mostly in connection to ionic package. Problem: There was no real solution :confused:

Ionic package release error for ios building
Error in Ionic package, Error Code 70

Please try to remove the ios platform and re-add it and try to build it again.