After Update big Problems

Hallo everyone,

i did the last update from the Theme. After i did it i have now big problems and i dont know hot to fix it. Now Visual Composer doesnt work and i miss all icons on my website and also under Theme options and in the visual composer. I cant click anything, and also on my website, all font icons, svg etc. are missing.
If you go to my webseite, every where, where a icon should be, is only a Square.

I did a backup file of the theme and the assests, and tried to fix it with the back up, but there is no way and nothing works.

I think all Images, SVG, Iconic Fonts and more are all missing and i don’t know why.

I hope you can help me, because a the moment its important for me that the website works.

http://www.artnuts.de

Thanks.
Freakman