Lazy Load not working

Smush Lazy load isn’t working on my theme when it is enabled my images stop to show and I can see this on my source code

https://cdn.livechat-static.com/api/file/v2/lc/att-old/8801096/2cb5a3c62cb1e56dda9097114bc6126e/MarketSmar.png

I would love this to be working on my site, can you help me?