Warning messages when loading antcient gds

[josepfargas]

Describe the bug
I have some gds from an ancient version of kf (0.8.2) that I want to load into the newest kf version.
I remove all the meta data from the initial gds and flatten, so it should load just fine. However, when I load the gds into a cell I get an AssertionError warning.

Here a sample gds to reproduce the error:

sample_gds_from_ancient_kfaCtory_exAmple.zip

To Reproduce
Steps to reproduce the behavior:
kf.kcell.kcls['MYPDK'].read((./sample_gds_from_ancient_kfaCtory_exAmple.gds").resolve())

Warning: AssertionError: AssertionError
C:---\venv\Lib\site-packages\kfactory\kcell.py:8575
Warning: AssertionError: AssertionError
C:---\venv\Lib\site-packages\kfactory\kcell.py:8575
Warning: AssertionError: AssertionError
C:---\venv\Lib\site-packages\kfactory\kcell.py:8575
Warning: AssertionError: AssertionError
C:---\venv\Lib\site-packages\kfactory\kcell.py:8575
Warning: AssertionError: AssertionError
C:---\venv\Lib\site-packages\kfactory\kcell.py:8575

[sebastian-goeldi]

Hmm, yeah, I see why this is happening. Essentially it's because your MYPDK sets some meta infos which aren't present in the to be loaded layout. I think I should just remove the checks on layout level. They don't make that much sense.

On the other hand the interesting part is that KLayout converts an error to a warning, which imo shouldn't happen.

For your case this shouldn't impact functionality though.