Swiftmessages: Xcode 10.3: Failed to find or create execution context for description

[rkittinger]

Hello, I just updated to Xcode 10.3, project is updated to Swift 5, but worked fine before.
Now I am getting this error when building:

/Pods/SwiftMessages/SwiftMessages/Resources/CenteredView.xib:
Failed to find or create execution context for description ' System content for IBCocoaTouchFramework-NineOneAndLater scaleFactor=2x'. These intermediate objects were non-nil: (
CenteredView.xib

/Pods/SwiftMessages/SwiftMessages/Resources/CardView.xib:
Failed to find or create execution context for description ' System content for IBCocoaTouchFramework-NineOneAndLater scaleFactor=2x'. These intermediate objects were non-nil: (
CardView.xib

[rkittinger]

Solution:
sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService