Various problem – Search, minicart, checkout

[net-project]

Good morning, I encounter some problems:

1 – I entered RBpazt Search Form and if I enter any key and give a send in the search results I receive an error message and the url in the browser bar is https://carsricambi.it/?s=bmw&post_type=product&product_cat=

2 – If I delete a product from the mini cart it is possible not to have the refresh of the entire page

3 – Always in the checkout it is possible to increase the quantities, because if I click on the cart in the menu it does not go to the cart page and therefore the user would have to go to another page to activate the cart and this would make me lose the order

[Author]

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