Product Catalogue images disappearing / error on -home_default

[VMT]

Hi all,

We've had this bug for a couple of years and versions of prestashop now. Essentially images disappear on the catalogue page, but not on the product page. The simple fix was to download the image, change its name and resave it as the cover image (resaving the same name would not fix it) But today it's happened across 8+ products and its frustrating to keep changing this.

Note that we haven't updated the products page or images nor the website when this bug occurs. It appears randomly over time and seems to be similar to:

 

Our website is here www.vetomedtech.com.au and you can scroll to the bottom to see multiple missing images.

 

When clicking on the product, image returns. It seems to be an image error between the -home_default image (error) and the -large_default (working)

I have tried regenerating thumbnail images under the Design tab to no success.