FunctionClauseError: no function clause matching in DateTime.to_date/1

[sentry-joshmartin-ch]

Sentry Issue: BACKEND-214

FunctionClauseError: no function clause matching in DateTime.to_date/1
  File "lib/calendar/datetime.ex", line 896, in DateTime.to_date/1
  File "lib/enum.ex", line 4076, in Enum.find_value_list/3
  File "lib/hygeia/case_context/case.ex", line 411, in Hygeia.CaseContext.Case.phase_dates/2
  File "lib/hygeia/case_context/case.ex", line 443, in Hygeia.CaseContext.Case.earliest_self_service_phase_start_date/2
  File "lib/hygeia_pdf_confirmation/helpers/confirmation_dates.ex", line 11, in HygeiaPdfConfirmation.Helpers.ConfirmationDates.isolation_start_date/2
    {_status, date} = Case.earliest_self_service_phase_start_date(case, Case.Phase.Index)
...
(3 additional frame(s) were not displayed)

(FunctionClauseError no function clause matching in DateTime.to_date/1)