Problem : some icon not showing for no reason on my website

Hey ! I have a big problem on my website since today, I don’t know why but a lot of icon on my website disappear ; the stars icon below the casino name, my social media icon at the footer of the site (as you can see on in the attached picture) and every other icon of my theme.

Does anyone have a solution to my problem?

(Here is the url of my website to see it with your own eyes : csgoawp.com )