Hi @drAliRahnema,
Thank you for reporting issue!
The export feature was getting the SVG as is, and also the tag was not changed. If the image was specified as a relative URL, it would be invalid after download.
As a new feature in v0.7.0, I have added the feature to convert image URLs to data-uri(base64) and retrieve them.
Also I created an example, so please try it out.
hi @dash14 when export graph that has image as node background, the image will not be appeared in the result for example: thank you