The image is too small and it is technically possible to obtain the higher resolution version of it. It is fixed in my template. See 6.2.1 from Checklist:
6.2.1 Image quality When several image resolutions are available, the IV page should use better quality images (within reason). The optimal resolution range is 1280px-2560px, using larger images is pointless. Note that images that are too large (>5 MB) will fail to load.
If for some reason it is only technically possible to obtain low-resolution versions of images (lower than 320px) for a page, on which high-resolution images are available on the web, the page should not generate an IV.
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6.2.1 Image quality
When several image resolutions are available, the IV page should use better quality images (within reason). The optimal resolution range is 1280px-2560px, using larger images is pointless. Note that images that are too large (>5 MB) will fail to load.
If for some reason it is only technically possible to obtain low-resolution versions of images (lower than 320px) for a page, on which high-resolution images are available on the web, the page should not generate an IV.