Booster plus checkout error

Hi,
after last update of free version of booster for woocommerce I have an issue on checkout page. When I send the order, “internal server error” is displayed. Anyway, the order was sent end emails too.
If I deactivate booster plus plugin, everything is ok.
Anybody else have this problem?

https://ww.wp.xz.cn/plugins/woocommerce-jetpack/