The activity list needs a direct link to the thumbnail. For that, upon upload of the ARLEM zip archive, the thumbnail.jpg or thumbnail.png contained in the archive's root needs to be stored somewhere so it can be accessed directly via URL (using either file store API or store in database with a native access method).
The activity list needs a direct link to the thumbnail. For that, upon upload of the ARLEM zip archive, the thumbnail.jpg or thumbnail.png contained in the archive's root needs to be stored somewhere so it can be accessed directly via URL (using either file store API or store in database with a native access method).