TypeError in ListElementEntities error handling

Sentry Issue: ARKINDEX-FRONTEND-AFP

TypeError: t is null
  at call (./js/store/entity.js:28:41)
  at call (./js/store/entity.js:112:7)
  at u (None:537:3)
  at o (None:537:3)
...
(9 additional frame(s) were not displayed)

When an error occurs in an API call to ListElementEntities, the commit that should cause the element list to be cleared out entirely instead causes a TypeError.