Can't package indesign file

[37306623yx8j]

I'm trying to package a file in InDesign for an assignment but I can't even press the button. Can anyone let me know if I've done something wrong while setting up my document? Or any other reason why the button can't be pressed? I added a screenshot too. 

It's currently Friday evening so I can't contact my lecturers...

[Eugene Tyson · Accepted solution]

Looks like you haven't saved it.

And it's on the cloud - not sure if that is affecting it.

[37306623yx8j]

Thanks! Yeah, tunred out I needed to save it as an InDesign file not to the cloud LOL.

[Steve Werner]

InDesign Cloud Documents cannot be cannot be packaged. It's in the release notes for the feature.