Interrapt G35

The last webinar card under "Participants were most curious at" displays no thumbnail image. Instead, it shows a gradient placeholder.
Environment
https://qainterrapt.brainster.xyz/dashboard
Steps to Reproduce
1.Navigate to the dashboard page
2.Scroll down to the "Participants were most curious at" section
3.Observe the last tile (1test)
Expected Result
A relevant thumbnail image should be displayed
Actual Result
No image is shown; only a gradient placeholder appears