If you already generated your OpenSCAD code and have this issue, simply removing the spaces from all instances of your file name within the code should solve it. We found when the name included spaces, the way the code in OpenSCAD worked it would completely fail to generate anything and it would state it has errors. When you create the output code that OpenSCAD will use to create the 3D model, the name of the file can cause issues. When we were testing this software combination we ran into one small bug in this process. This process has been around for a little while now and there are already some great instructions for how to do this process you can check out here:

This process uses the two programs Inkscape and OpenSCAD as well as a plugin for Inkscape. This is a fairly straight forward free method to convert your 2D images to STL. As such there have been several methods developed to convert your 2D image into a 3D model. This process got to be fairly time consuming in order to accurately replicate the details and the fonts that were used. To 3D print these many people would recreate their 2D images from scratch in a 3D modelling program while maybe making use of the image as a reference. We have found it to be common for people to have 2D images of logos or other high contrast images that they want to 3D print.

Stl inkscape