Layout lines in Vector

Hello community. I have worked in sketchup in the past but I am new to layout. I have created interior elevations and a demo and proposed plan for permitting and when I go to export it creates lines all over my drawings. Also, when it is in vector mode these mysterious lines appear. Please tell me a way to get rid of these when I export. The drawings look good in raster mode. I don’t care if it is a work around but I would like to know how to fix it in the future. Anybody please help!

If you share the file we could check it to see what´s going on, otherwise we could be hours trying to guess.