ws_opt_in_nonce on request api response

Hello,

Seems like it’s the third time in 3 yeas that the error occurs

https://www.ads-software.com/support/topic/ws_opt_in_nonce-on-request-api-response/

https://www.ads-software.com/support/topic/big-html-render-issue-over-website-when-plugin-is-activate/

When updated to the last version (4.0.0) the line 392 of the file located at “woocommerce-sendinblue-newsletter-subscription/src/managers/cart-events-manager.php” is rendered in the head

Any quick fix to wait the 4.0.1 ?

Thank you