Image shortcode is blank

I have created an email and I’m trying to use your image shortcodes, but both the thumbnail and feature image are blank, even though the posts have them.

Here is the email contents:
Your latest Real Estate Voice article has been published:

<a href="{post_permalink}">{post_title}</a>
Image: <img src="{post_featured_image_url}" alt="" />{post_featured_image_url}
Thumbnail:{post_thumbnail_url}
{post_excerpt}

See the new article: {post_permalink}

Here is the log file:

<a href="https://therevoice.com/how-to-secure-your-rental-property-application/">How to secure your rental property application</a>
Image: <img src="" alt="" />
Thumbnail:
When it comes to competing for a rental property, your application can be the difference between getting your foot in the door of a home you love and missing out on the opportunity. Here are some tips to help your rental property application stand out among the competition.  Start by getting organised Don’t start attending 

See the new article: https://therevoice.com/how-to-secure-your-rental-property-application/

• This topic was modified 4 years, 5 months ago by partica.