Import .svg files in grease pencil

Hi,

i´m starting with grease pencil and blender and try some things. I imported an .svg file in grease pencil, but here are some black outlines. How can i avoid them?

The imported image looks like this:

Greetings
ebody

Select one of the objects and go to the material panel. The material may have both a stroke and a fill. Uncheck the stroke.