Cannot index property 'targetRecordTypeUuid' of type Text into type List of Variant

Getting below error when opening "Summary Page" in Studio site of Case Management Studio. We have not changed any object in Case Management Studio applications manually. Can anyone help with this?

Expression evaluation error [evaluation ID = 265c9:30306] in rule 'cmgt_cb_studio_displaybuilder' (called by rules 'cmgt_cb_sitepage_casetypes_caseview' > 'cmgt_wfl_sitepage_casetypes') : Invalid index: Cannot index property 'targetRecordTypeUuid' of type Text into type List of Variant