Error after update cf mail

Envato has sent a mail holding install of an update, so I logged in, downloaded the update, your theme has installed and now I get this :

“Unite Gallery Error: The slide don’t have big image defined ( data-image=’imageurl’ ). Please check gallery items.”
on the front-page of this website.

I love that 🙁

type used : Tiles – Justified and 10 items and there is no item to add a big item

any solution ?

https://ww.wp.xz.cn/plugins/unite-gallery-lite/