Images must be put in the Web root, not in the Foxweb root, because they must be accessible to the web browser.
You should read this page from the documentation :
Sent by Olatunji Beckley on 06/16/2017 04:59:04 AM:
Hi, just started using FoxWeb. Can anyone explain why my images are not displaying even with the code below:
<img src="son-logo.jpg" alt="SON Logo" border=0></a>
I've also tried other image formats (png, bmp & tif) and the image files are located in FoxWeb's root directory (...\Foxweb\scripts\)