Mosaic - not able to save configured widget

[Zen]

Mosaic saves the whole configuration a single JSON including images so it's possible to hit memory limits while saving. Consider using a different image format - JPG or PNG instead of SVG. This will make the widget significantly smaller. You can also use TinyPNG (https://tinypng.com/) to further optimize your images.

Thanks sir. We were already trying JPG format and each widget is smaller and the trouble seems to be solved. We first resetted the whole mosaic configuration, otherwise we were not able to save not delete items.