Timecard Error Exception During Rest Action When opening View Approval History on Existing timecard

User who has a custom role to enter time is receiving the "Exception During Rest Action" when opening View Approval History on existing timecard. Does anyone know what could be missing from my role?

The role currently has the following USE REST privs and aggr privs:

Use REST Service - Time Card Entry Details Read Only	HXT_REST_SERVICE_ACCESS_TIME_CARD_ENTRY_DETAILS_RO_PRIV
Use REST Service - Time Card Entry Details Read Only	ORA_HXT_REST_SERVICE_ACCESS_TIME_CARD_ENTRY_DETAILS_RO
Use REST Service - Time Card Field Values Read Only	HXT_REST_SERVICE_ACCESS_TIME_CARD_FIELD_VALUES_RO_PRIV