[TRANSLATIONS] Invalid strings.json: Invalid translation key 'USED', need to be [a-z0-9-_]+ and cannot start or end with a hyphen or underscore. for dictionary value @ data['entity']['sensor']['voucher']['state_attributes']['status']['state']. Got {'USED': 'Used once', 'USED_MULTIPLE': 'Used multiple times', 'EXPIRED': 'Expired', 'VALID_ONE': 'Valid once', 'VALID_MULTI': 'Valid multiple times'}