Can't use it - error on clicking "Bake Mesh Maps"

[salmazov]

I downloaded source code as a zip file, loaded in Blender 4.4 on macOS Sequoia 15.3.2 and got that message when I clicked on a button "Bake Mesh Maps":

Python: Traceback (most recent call last):
File "/Users/sergei/Library/Application Support/Blender/4.4/scripts/addons/RyMat-main/core/mesh_map_baking.py", line 754, in execute
mesh_map_folder = blender_addon_utils.get_texture_folder_path (folder="MESH_MAPS')
File "/Users/sergei/Library/Application Support/Blender/4.4/scripts/addons/RyMat-main/core/blender_addon_utils.py"
", line 404, in get_texture_folder_path
os.mkdir (default_path)
OSError: [Errno 30] Read-only file system: 'Mesh Maps'

Blender is installed in default Application folder in macOS