Layer slider not saving

Hi there,

Hope you can help me with a problem I have with saving changes to the layer slider. After pushing the save button on the bottom of the page it just keeps saving and never stops. I want to put a new picture in one of the sliders, but I can’t change anything to the slider at the moment.

I’ve already tried deactivating all the plugins and I updated the theme to the latest version, both without any result.

Kind regards,

Ronny