Sitemap Issues Who Knows How to Solve Thank You 
Author: Dinh Q.
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Hello. Specify the image in the video object settings.
Author
I did everything
view attached photos
I recommend uploading images with filenames that do not contain spaces or uppercase letters. For example: "name-of-my-file.jpg".
Author
thank you, changed the name, and me and solved the problem
Glad that your problem has been resolved.