This is a page describing the book that you can buy on this site. It seems to me it is not necessary to generate.
Type of issue
IV not generated for target page
Reported
May 30, 2017
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1.1. Pages with static article-like content
News articles
Blog posts
Guides
Wiki entries
Documentation
Etc.
https://instantview.telegram.org/checklist#1-iv-targets-must-generate