Unable to share my project with the class?

I write some text and upload a picture, when pushing the "I made it!" button I get an error telling "you must specify a topic Id or an instructable id"

Android 7.0 on a Samsung Galaxy tab S2 tablet.

I had the same problem and posted it as a question.

jesito (author)  MichaelS12433 days ago
Thanks for the reply. I thought I did so in the lesson. Did you get an answer?