Version 2.47.0 - Librsvg's XML parser now supports namespaces (xmlns), and is stricter than before about it. Files may fail to parse if there are attributes or elements with namespace prefixes (e.g. foo:bar instead of plain bar), but without a corresponding namespace declaration (e.g. xmlns:foo="http://example.com/foo"). This may happen especially with incorrectly-written SVGs that use xlink:href or xi:include attributes without the corresponding namespace declarations. If you run into this, just add the following to your toplevel SVG element: ^^^^^^^^^ these ones