Clicking on Add to Cart Button not work

If I click on the add to cart button in a Popup “Quick View” the Plugin Boost Sales return a javacript error.

Uncaught TypeError: data_post.split is not a function
at HTMLDocument.<anonymous> (woocommerce-boost-sales.js:29)
at HTMLDocument.dispatch (jquery.js:1)
at HTMLDocument.r.handle (jquery.js:1)
at Object.trigger (jquery.js:1)
at Object.a.event.trigger (jquery-migrate.min.js:2)
at Function.ajax (jquery.js:1)
at HTMLFormElement.<anonymous> (frontend.min.js:1)
at HTMLFormElement.dispatch (jquery.js:1)
at HTMLFormElement.r.handle (jquery.js:1)