Fatal error when installed with WPML plugin

Hello

I am php developer working on WPML plugin (https://wpml.org). We found your plugin is causing fatal error when installed alongside with ours.

How to reproduce

Setup WPML and WCML in 2 languages
Enable multicurrency
Install Partial.Ly plugin – available from the WP repository
Make a rest request to: /wp-json/wc/v3/products
Notice a fatal error as mentioned above

The error is:
> PHP Fatal error: Uncaught Error: Call to a member function get_cart() on null in …\woo-partially\inc\gateway.php:20

The piece of code there is:

// check for products in the cart with Partially disabled
  foreach (WC()->cart->get_cart() as $cart_item_key => $item) {
    if (get_post_meta( $item['product_id'], 'partially_disabled', true ) == 'yes') {
      $hasDisabled = true;
    }
  }

The cart is not set indeed. Could you wrap this piece od code into that if, so it will not be executed during REST API calls?

if ( null !== WC()->cart ) {
// your code goes here
}