Sorry, your issue is about an article from 2015 :( Also, those images don't have any width/height.
Declined by admin
Type of issue
IV page is missing essential content
Reported
Apr 17, 2019
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The first and the last images should be definitely <pic> because of too low resolution. Other images the same (just low res).
Also preview image is awesome :)
It seems to be all pages from /directory/ path have low res images.