Recently downloaded the Xcode 11 Beta to test my app in iOS 13 and I'm running into an issue I can't seem to figure out. Builds fail every time on the [CP] Copy Pods Resources step, saying "Command PhaseScriptExecution failed with a nonzero exit code". Now I know this is the error when any run script phase fails, but usually there is some useful information provided along with this error.
Error output:
ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target 11.0 --output-format human-readable-text --compile /Users/chris/Library/Developer/Xcode/DerivedData/SmartPager-dcfjsnhrgkjfeabbvafghvwsrsxr/Build/Products/Debug-iphoneos/SmartPager Sandbox.app/JSQMessagesViewController.nib
/Users/chris/Work/projectname/Pods/JSQMessagesViewController/JSQMessagesViewController/Controllers/JSQMessagesViewController.xib --sdk /Users/chris/Downloads/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.0.sdk --target-device ipad --target-device iphone
2019-09-06 13:26:17.003 IBAgent-iOS[39395:514843] Incorrect screen size for <UIScreen: 0x7fb0e05245a0; bounds = {{0, 0}, {0, 0}}> in UICollectionViewData
ibtool --reference-external-strings-file --errors --warnings --notices --minimum-deployment-target 11.0 --output-format human-readable-text --compile /Users/chris/Library/Developer/Xcode/DerivedData/SmartPager-dcfjsnhrgkjfeabbvafghvwsrsxr/Build/Products/Debug-iphoneos/SmartPager Sandbox.app/JSQMessagesCollectionViewCellIncoming.nib /Users/chris/Work/projectname/Pods/JSQMessagesViewController/JSQMessagesViewController/Views/JSQMessagesCollectionViewCellIncoming.xib --sdk /Users/chris/Downloads/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.0.sdk --target-device ipad --target-device iphone
Command PhaseScriptExecution failed with a nonzero exit code
Relevant information: From what I can tell this might have something to do with a deprecated cocoapod we're using, specifically JSQMessagesViewController (7.3.5). Obviously using a deprecated library isn't great, but it builds and runs just fine in Xcode 10, so I don't know what the issue might be. In a separate project I tried just adding this pod and it throws the same error. The line about "incorrect screen size..." seems to just be a warning rather than an error, as in Xcode 10 it compiles correctly with that same line.
I've tried restarting my computer, cleaning, removing derived data, all the usual stuff. I just don't know where else to look now. Any advice would be most appreciated. Thanks!

