React ErrorBoundary TypeError: Cannot read properties of null (reading 'get')

[sentry-io]

Sentry Issue: DELIBERATION-EMPIRICA-5W

React ErrorBoundary TypeError: Cannot read properties of null (reading 'get')
  at Steps (/assets/index.78c6c72e.js:38503:3)
  at Exit (/assets/index.78c6c72e.js:38664:3)
  at EmpiricaContext (/assets/index.78c6c72e.js:38562:12)
  at InnerParticipant (/assets/index.78c6c72e.js:84683:19)
  at EmpiricaParticipant (/assets/index.78c6c72e.js:38147:3)
...
(4 additional frame(s) were not displayed)

TypeError: Cannot read properties of null (reading 'get')
  at exitSteps (/assets/index.78c6c72e.js:84706:28)
  at None (/assets/index.78c6c72e.js:38517:11)
  at Rj (/assets/index.78c6c72e.js:16679:334)
  at Ik (/assets/index.78c6c72e.js:16721:117)
  at None (/assets/index.78c6c72e.js:16717:405)
...
(2 additional frame(s) were not displayed)

[JamesPHoughton]

Error boundary catches in exitSteps: