V-data-table image link-url

Dashboard
1

I'm working on a v-data-table and would like to show a picture with a text field.
I know it is not a simple question because it will depend on my server setup, but I'm having trouble with getting the correct link to the picture:

image
image720×544 73.7 KB

This code is not showing the picture, as I expected:
image
image458×410 19.3 KB