remove product from cart, have this error 0 stripslashes(): Argument #1 ($string

-- url of the page with the problem -- : www.classicbikesregis.it/carrello.html
-- HikaShop version -- : 6.5.1
-- Joomla version -- : 4.4.14
-- PHP version -- : 8.3.29
-- Browser(s) name and version -- : ALL
-- Error-message(debug-mod must be tuned on) -- : 0
STRIPSLASHES(): ARGUMENT #1 ($STRING) MUST BE OF TYPE STRING, ARRAY GIVEN

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Hi, let me give you an example: I'm logged in and I have 3 products in my cart. If I remove one (click on Trash) I get:
0 stripslashes(): Argument #1 ($string) must be of type string, array given
Please can you help me?
Hika shop already reinstalled!