URL in sitemap with 404 error. Strange parameter at the end of the URL

by supap   Last Updated April 04, 2018 11:04 AM

in my sitemap generated with SEO Yoast, there are some URL in 404 error.

In the image you can see a strange parameter at the end of the URL.

The sitemap is "attachment-sitemap1.xml", so there are images that doesn't exist.

How i can resolve this? Thank you

enter image description here

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Updated October 21, 2018 10:04 AM