Box around lasered vector

Hello, I wanted to laser a vector file onto a wooden plate for the first time today. Unfortunately, I always get a rectangle lasered around the motif to be lasered. In Luban, this rectangle is also displayed and is apparently simply added to the motif. The rectangle is lasered 4 to 5 times in a row. Is there a way to omit this completely and really only laser the mitov as a vector?

There’s a problem with you graphics file. You have extra layers or shapes that you need to delete.
Try opening it in a different program like Inkscape and sometimes you’ll see stuff that’s hidden.

-S