downloading of labels crashes when Answer row is not a dictionary / json-like object

[Tkootstra]

Describe the bug
When downloading labels, the answer will get parsed as a string-formatted json string. However, this assumption does not hold for all annotations / scoring sheets. For example the scoring sheet of 1286 (PD-L1) has a question called "Brown Channel Intensity" for which the answer will be a normal string, instead of string-formatted dictionary-like object.

To Reproduce
try to download annotations from slidecore study 1286, using the cli

Expected behavior
should handle normal strings, probably solvable by doing some type checking

Environment
Package Version

---

certifi 2022.6.15
cffi 1.15.1
charset-normalizer 2.1.0
dlup 0.3.0.dev0
idna 3.3
imageio 2.21.1
networkx 2.8.5
numpy 1.23.1
opencv-python 4.6.0.66
openslide-python 1.2.0
packaging 21.3
Pillow 9.2.0
pip 22.2.2
pkgconfig 1.5.5
pycparser 2.21
pyparsing 3.0.9
pyvips 2.2.1
PyWavelets 1.3.0
PyYAML 6.0
requests 2.28.1
scikit-image 0.19.3
scipy 1.9.0
setuptools 56.0.0
shapely 2.0a1+2.g97df157
slidescore-api 0.1.0
tifffile 2022.8.8
tifftools 1.3.5
tqdm 4.64.0
urllib3 1.26.11

Additional context
Stacktrace:

Traceback (most recent call last):
File "/homes/tkootstra/datasets_manifests/create_versioned_dataset.py", line 154, in
download_labels(slidescore_url="https://slidescore.nki.nl/",
File "/homes/tkootstra/venvs/datasets_manifests/lib/python3.8/site-packages/slidescore_api/cli.py", line 310, in download_labels
for curr_annotation in annotation_parser.from_iterable(
File "/homes/tkootstra/venvs/datasets_manifests/lib/python3.8/site-packages/slidescore_api/utils/annotations.py", line 433, in from_iterable
answers = json.loads(_row["Answer"])
File "/homes/tkootstra/miniconda3/lib/python3.8/json/init.py", line 357, in loads
return _default_decoder.decode(s)
File "/homes/tkootstra/miniconda3/lib/python3.8/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/homes/tkootstra/miniconda3/lib/python3.8/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

[AjeyPaiK]

Is this bug still present in slidescore-api @jonasteuwen and @Tkootstra ?

[Tkootstra]

Currently. the download labels call does not have a proper way of dealing with filtering of bulk questions (either json / text question, can be requested with client.get_questions()). Imo, this should still be added to the api before you close this issue.