I have frequently been seeing this error in IntelliJ (Ultimate 2020.2.3):
Cause: cannot assign instance of java.util.Collections$EmptyList to field java.lang.StackTraceElement.moduleVersion of type java.lang.String in instance of java.lang.StackTraceElement
It doesn't seem to be able to show me any stack traces from my app. This behavior started with an upgrade some weeks back.
I tried running with --stacktrace but it made no difference.