I attempted to add an Encounter to a test patient

Bonnie popped up an error:

There was an error calculating measure v0.
One of the data elements associated with the measure is causing an issue. Please review the elements associated with the measure to verify that they are all constructed properly.
Error message: n.hasMatch is not a function

The measure is attached. It is a cohort measure.

After adding the encounter, it appears that Bonnie stopped execution of the measure.
Logic that was highlighted before adding the encounter is not highlighted after adding the encounter.
If I delete the encounter, the highlighting re-appears.