Not getting the expand (button) in Power BI editor while importing the json in excel

Hi,

Once I have imported the json file into excel, the Power BI editor is opened and it's converted to queries. 

(Attaching Screen shot 1)

Since, it's nested, first I converted into table. (Attaching the screen shot)

But here, I am not getting the (two side arrow button) to expand to new rows or values.

Please let me know how to go about it.

Thanks,