Xcode 12 debugging: <Invalid Swift context>

What does it mean when the Xcode 12 debugger successfully pauses at a breakpoint but for all entries on the stack displays "(<Invalid Swift context>)" for all variables?

This is Xcode 12 beta 2 running on Catalina debugging an iPhone XS Max running 13.1.2.

Right clicking on a variable to print it out results in:
Code Block
Printing description of item: (<invalid Swift context>) item =

and trying po item results in the debugging session getting dropped.


I'm having the same problem debugging a macOS Catalina app in Xcode 12 beta 2.
Xcode 12 debugging: &lt;Invalid Swift context&gt;
 
 
Q