Problem with URL attributes

[SandrineP]

Hi,

I have a problem with my theme and the developer is not responding ... If anyone has an idea of how to fix that ...

I'm on a page, for example https://www.maisondete.fr/en/linen-comforter-covers/437-867-lagoon-stone-washed-linen-comforter-cover-3760266931674.html#/44-size_comforter_cover-240x220cm

When I change the dimension to 50x70cm, the following message appears in the Console: https://www.maisondete.fr/en/index.php?controller=product?token=f1fae80bf02bb20a642f1540bda94f24&id_product=437&id_customization=0&group%5B5%5D=43&qty=1&token=f1fae80bf02bb20a642f1540bda94f24&id_product=16&id_customization=0&token=f1fae80bf02bb20a642f1540bda94f24&id_product=267&id_customization=0&token=f1fae80bf02bb20a642f1540bda94f24&id_product=443&id_customization=0

This URL contains the id_product of the associated products: id_product = 437, id_product = 16, id_product = 267, id_product = 443

I don't know where the address is generated when we change an attribute because the problem comes from there. We should go to the URL https://www.maisondete.fr/en/linen-comforter-covers/437-866-lagoon-stone-washed-linen-comforter-cover-3760266931674.html#/43-size_comforter_cover-260x240cm

I do not know where to look, what to change ...
If someone has an idea.
Thank you !
Sandrine