Design API Failing Due to PNG Path Resolution (Beam to Beam cover_plate_welded)

[Navnit-07]

Problem

POST /beam-beam-cover-plate-welded/design/ was returning:

expected str, bytes or os.PathLike object, not NoneType

The error was caused by this line in web_pattern():

files("osdag_core.data.ResourceFiles.images").joinpath("Uw.png")

importlib.resources.files() failed to resolve the image path correctly in the Django environment, resulting in an invalid/None path and crashing the API.

Fix

Replaced it with a direct Django filesystem path using settings.BASE_DIR:

image_path = os.path.join(
settings.BASE_DIR,
"osdag_core",
"data",
"ResourceFiles",
"images",
"Uw.png"
)

Result

Design API works correctly and the image loads without errors.