Deprecated Function

I noticed these entries in my error log, triggering in the checkout:

[07-Dec-2024 14:57:12 UTC] The WC_Cart->fees function is deprecated since version 3.2. Replace with the fees API (WC_Cart::add_fee).
[07-Dec-2024 14:57:19 UTC] The WC_Cart->fees function is deprecated since version 3.2. Replace with the fees API (WC_Cart::get_fees).

[proxy_fcgi:error [pid 1058766:tid 1058862 [client xx.xxx.xx.xx:0 AH01071: Got error ‘PHP message: The WC_Cart->fees function is deprecated since version 3.2. Replace with the fees API (WC_Cart::get_fees).PHP message: The WC_Cart->fees function is deprecated since version 3.2. Replace with the fees API (WC_Cart::add_fee).’, 

I put in a Debug Backtrace in woocommerce/includes/legazy/class-wc-legacy-cart.php and here’s the results:

[07-Dec-2024 14:57:19 UTC] Array
(
[0] => Array
(
[file] => /public_html/wp-content/plugins/simple-sales-tax/includes/frontend/class-sst-cart-proxy.php
[line] => 111
[function] => __get
[class] => WC_Legacy_Cart
[type] => ->
)

[1] => Array
    (
        [file] => /public_html/wp-content/plugins/simple-sales-tax/includes/frontend/class-sst-checkout.php
        [line] => 409
        [function] => set_fee_item_tax
        [class] => SST_Cart_Proxy
        [type] => ->
    )

[2] => Array
    (
        [file] => /public_html/wp-content/plugins/simple-sales-tax/includes/frontend/class-sst-checkout.php
        [line] => 338
        [function] => set_fee_tax
        [class] => SST_Checkout
        [type] => ->
    )

[3] => Array
    (
        [file] => /public_html/wp-content/plugins/simple-sales-tax/includes/abstracts/class-sst-abstract-cart.php
        [line] => 53
        [function] => reset_taxes
        [class] => SST_Checkout
        [type] => ->
    )

[4] => Array
    (
        [file] => /public_html/wp-content/plugins/simple-sales-tax/includes/frontend/class-sst-checkout.php
        [line] => 130
        [function] => calculate_taxes
        [class] => SST_Abstract_Cart
        [type] => ->
    )

)

Could you please confirm, and advise when a fix will be deployed?