Trying to populate the dropdown with .svg image file and also sub folders.

I have a folder in current directry, Inside this folder, there are multiple subfolders, each containing SVG image files.I need to populate the imageDropdown with a list of these SVG files.The dropdown should also display subfolders, allowing users to navigate and select SVG files from any subfolder within croquis.where the Users should be able to open the dropdown and see a hierarchical list of subfolders and SVG files.

I'm getting this Error 48: File or folder does not exist. line: 1 -> $.evalFile("C:\Program Files (x86)\Common Files\Adobe\CEP\extensions\Adobe-Ext-MYM\croquis)