When I generate an SVG, there is always a declaration like this, which conduses jekyll.
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
Is there a way to remove this setting up an attribute in the command line?
This <?xml> header is not very useful so we have simply removed it.You can check last beta (1.2020.20beta14) http://beta.plantuml.net/plantuml.jarWe will publish this new release in the incoming days.
Tell us if it's not working for you