Error 429 - Unable to add/delete product from cart

[comef]

Hi,
I notice that when we add and delete a large number of products in our pop-up basket, we get an error after a while (see screenshots). Then we can't do anything. The user is blocked. They can no longer add or remove products from the basket.
We've investigated the cart problem on my website and found that it occurs when a large number of different products are added to the cart. In this case, an error 429 {“status” : “ too_many_requests ‘, ’message” : “ Too many attempts ‘, ’description” : “ Please try again in a few minutes”} appears.
I see two scripts with this error:
update.js
add.js
After the problem, everything is blocked. You can't create an account, you can't send a message. You can't remove products from the basket, you can't add products to the basket.
Is there a limit on Shopify's side? Do you have any ideas about what might be causing the problem? What do we need to do to solve the problem?