Graphviz issues with Spaces


I have created a HF Space using Gradio and to plot graphs created with Graphviz. The app works perfectly fine locally.

I encounter an issue on my space: the .svg files produced & later used to populate the graph do not appear on the final render.
I tried to add graphviz & librsvg2-bin to packages.txt but it did not solve my problem.
I used absolute path to attach the .svg images to nodes in Graphviz (and as a result it does not raise a FileNotFound error).
I added a tab name “Test graphviz” where one can see the .svg files and make sure they exist.

I’m running out of idea right now…

Here is the space :

The final graph should look like this one :