Uncaught TypeError: button.unblock is not a function

Hello

I have an error using this plugin, nothing happens when I click on Compare and I got this error in console : Uncaught TypeError: button.unblock is not a function in /yith-woocommerce-compare/assets/js/woocompare.js?ver=2.0.0

I have just updated the plugin

Could you please help me?

YITH WooCommerce Compare : Version 2.0.0
WooCommerce : 2.3.8
Website : http://outletenligne.com/

Thanks a lot

https://ww.wp.xz.cn/plugins/yith-woocommerce-compare/