Xcode 8 Beta (null) was unable to service the request

Question

I have an app that worked fine in the released version of Xcode. I downloaded the beta and after I fixed all the little changes I ran it and it worked. I just came back and

Answer 1

I had 2 versions of Xcode installed. Xcode 7 and 8. I resolved this issue by setting the command line tools to Xcode 8 in preferences. Open preferences -> Locations -> Command Line tools. Set that to Xcode 8.