YITH Wishlist Shortcode Fatal Error

Hello,

I have created a custom Single Product Page, and when I used the YITH Shortcode:
[yith_wcwl_add_to_wishlist]
In my layout.

Then – I got this error message:
Fatal error: Call to a member function get_type() on null in /home/brandzbo/public_html/tarot/wp-content/plugins/yith-essential-kit-for-woocommerce-1/modules/yith-woocommerce-wishlist/includes/class.yith-wcwl-shortcode.php on line 361

Is there a way to fix this?

Thanks in advance!!