I've just ran into the same problem.'Unable to insert COPY_SEND', but not in CloudKit environment.
App running on iPhone Xs - iOS 13.1.3 - XCode 11.2ß2 - debug activated with iPhone connected by cable
In 2 views, I can longPress on an image to get a Preview.
Everything works OK, Preview perfectly displayed
But when the Preview opens and I hard press to make the Preview "persistent", I get the following log:
2019-12-23 20:58:23.264160+0100 App[21138:14016010] [Common] _BSMachError: port c103; (os/kern) invalid capability (0x14) "Unable to insert COPY_SEND"
However, I can dismiss the - persistent - Preview by scrolling down or by hitting a Done button that connects to Exit for unwindSegue.
I have noticed no functional impact on the app.
Is this related to forceTouch and its planned obsolescence ?