Prestashop 1.6：无法在制造商页面中显示制造商徽标

I'm developing an e-commerce using Prestashop 1.6.1.3.
I have a problem that I can't solve: in the manufacturer page of my website I am not able to see the manufacturer logos (see the screenshot).

In the manufacturer table the logo is present and I regenerated the prestashop miniatures too, so I can't understand why the images are not loaded in that page.

I hope you can help me. Thanks!

Issue solved: the problem was related to the logo image size.
I had to set the height and width of the image from: Preferences -> Images