使用Javascript获取JSON数组（API），其中对象在对象中

I am using the code below to build a table based on an API and am fine when there is in object in an array (e.g. lineStatuses[0].statusSeverityDescription), however when there is an object, in an object, in an array, it does not work and I get the result [object Object] returned.I am using the code below to build a table base