I have a two Magento site both running on M2.3
On one site product details page images are served from pub/media/product. In this case the product images return 404 error. When I check, the product images are saved in pub/media/catalog/product
In the second website the images are served from pub/media/catalog/product which seems to be correct.
The 2 websites use the same theme ultimo.
So why does the first website use wrong image URLs?
Thanks for your help.