Since Xcode 11 Beta 3, I have been unable to build a project that has a ViewController containing both ARView and Storyboard ID or ARView and a segue connected to the ViewController. This still exists in Beta 4.
This is what the error said,
"/Users/.../Base.lproj/Main.storyboard:1:1: Internal error. Please file a bug at feedbackassistant.apple.com and attach "/var/folders/zg/q7t6s1qj63b2b0bzjxxn21ph0000gp/T/IB-agent-diagnostics_2019-07-18_04-54-59_252000"."
and sometimes there is this additional error,
"/Users/.../Base.lproj/Main.storyboard:1:1: The folder “StringsFiles.plist” doesn’t exist."
I wonder if anyone is experiencing this as well. I tried to find online but it seems that no one is talking about ARView implementation.
Seems XCode acks it is a bug.
So, follow their request sending a bug report and hope beta 5 will correct it.