Screenshot.png not showing in the admin panel

Please provide a direct link to the screenshot.png file (https://example.com/wp-content/themes/yourthemehere/screenshot.png)

Thank you for your answer, I will provide the link in a second.

• This reply was modified 6 years, 10 months ago by Dan Rod.

I’m not sure if this is the correct way to do it, here is a link to my file https://ln.sync.com/dl/5cd6858e0/hsikjz2d-6eu7h66s-ywb4cin2-b6xbweaq

That was not what I asked for, but it is a valid .png file at least. Is it in the root of your theme’s directory (at the URL I noted above)?

Yes, my screenshot.png file is in the following directory:
var/www/html/wordpress/wp-content/themes/advanced-theme/screenshot.png
It is a valid PNG file.

Is the file readable? What are the ownership and permissions?

Thank you!!! That was the issue, I changed the ownership of the /var/www directory to www-data group and it immediately worked perfectly. Thanks a lot for your help!