Getting Ajax error!!

Hello, I am using this plugin. I am also using woocommerce booking plugin. But suddenly I see my website woocommerce booking option is not working then I see it’s getting ajax error please see screenshot https://prnt.sc/n8jmga

After research, i see this multi-currency plugin caused this issue. When I deactivate the plugin then booking works and when I activate it then booking doesn’t work. It was working before but suddenly faced the issue after changing my domain. I don’t understand what is the issue. Currently, I deactivate the currency plugin. But I like the plugin and want to use it.

Here https://www.artvallarta.com/product/introduction-to-wheel-throwing/

I really need a solution.

Thanks