problem with swiper-slide with images in product.tpl

[Spesamus]

Hi

I have a problem with the dimension of the images in product.tpl.
The images are of dimensions 1018 x 1018 px, instead of dimensions 233 x 233 px.
I understood that the problem is bound at variable $type that, if exists,   give at tag <artical> the value at the tag <class> with "swiper-slide".
How I can eliminated this variable?
In normal prestashop installation (I have 1.7.4.2), this variable is not exist in this page, and the images are good, so maybe I changed somebody in BO?
The link of my shop is 

https://eurosparpescaracentro.gospesa.it/14886-i-freschissimi

 

and the value of variable $type is: ViewCategory

thanks for help