Android Studio Vector asset always could not generate a preview

I want to use vector asset in android studio to generate svg xml file, I convert my png to svg in this web site
but when I use this svg file in vector asset to generate xml file, I get following error message

It display "could not generate a preview"
How can I fix it?

Solution

I've never had any luck with those convert sites. You're better off using photo tools to create an SVG. Make sure to follow the SVG guidelines from Android listed here