how to read json file

[jk91]

This is getting silly you most read what post.
I can get that error to bye doing File --> Upload Notebook.
This is not what you shall do.
Look at image stay away from the top menu line.
It's the menu on the left side Files,then if you take mouse over Upload it say Upload to session storage.
When Push button it open file menu and you have to navigate to data.json on your hard-drive.

when trying to select data.json file from menu on left side files,i can not see my data.json file as shon in attached screen shot for uploding were you able to see that data.json file once you had saved it as a notepad++ file on your desktop and once you tried to select it from this option.?
not sure why i am unable to select it whereas the same is available on my deskop in a notepad++ file.