"Error in user$id: $ operator is invalid for atomic vectors" when enabled [Resumable] in startSession Module.

[koalawangyang]

Concerto Platform version

v5.0.26

Expected behavior

The Test should be normal and could be resumable after enabled [Resumable].

Actual behavior

The Test would display "Test problem encountered. Execution halted."

And the error message could be found in system logs.

Steps to reproduce the issue

1. In startSession Module, check the [Resumable?] box and save the test.
2. Click [Run Test] to test it.
3. Error occurred.