Error log

Hey,
My error logs are getting full with the following error:

[lsapi:notice] [pid 483172:tid 140252480001792] [client 00.000.000.000:52853] [host www.mydomain.nl] Backend log: The WC_Cart::get_item_data function is deprecated since version 3.3. Replace with wc_get_formatted_cart_item_data.\n, referer: https://www.mydomain.nl/
[lsapi:notice] [pid 483172:tid 140252480001792] [client 00.000.000.000:52853] [host www.mydomain.nl] Backend log: The WC_Cart::get_cart_url function is deprecated since version 2.5. Replace with wc_get_cart_url.\n, referer: https://www.mydomain.nl/
[lsapi:notice] [pid 483172:tid 140252480001792] [client 00.000.000.000:52853] [host www.mydomain.nl] Backend log: The WC_Cart::get_checkout_url function is deprecated since version 2.5. Replace with wc_get_checkout_url.\n, referer: https://www.mydomain.nl/
[lsapi:notice] [pid 483172:tid 140252417062656] [client 00.000.000.000:52853] [host www.mydomain.nl] Backend log: The WC_Cart::get_item_data function is deprecated since version 3.3. Replace with wc_get_formatted_cart_item_data.\n, referer: https://www.mydomain.nl/
[lsapi:notice] [pid 483172:tid 140252417062656] [client 00.000.000.000:52853] [host www.mydomain.nl] Backend log: The WC_Cart::get_cart_url function is deprecated since version 2.5. Replace with wc_get_cart_url.\n, referer: https://www.mydomain.nl/
[lsapi:notice] [pid 483172:tid 140252417062656] [client 00.000.000.000:52853] [host www.mydomain.nl] Backend log: The WC_Cart::get_checkout_url function is deprecated since version 2.5. Replace with wc_get_checkout_url.\n, referer: https://www.mydomain.nl/