Can't run tutorial under Debian 10 in WSL2

Describe the bug New user; just signed up. Logged into https://datapane.com/home/ and followed instructions.

To Reproduce

1. Start Debian 10 under WSL2 on Windows 10
2. goto https://datapane.com/home/
3. Copy script to rept.py
4. Do this:

sudo apt update
sudo apt install -y python3-pip
sudo apt install build-essential libssl-dev libffi-dev python3-dev
pip3 install datapane
python3 ./rept.py

1. Get error

Expected behavior Per the instructions, I should be able to refresh that page and see results.

Screenshots Error from running rept.py

Connected successfully to https://datapane.com as cek
Publishing report and associated data - please wait..
Traceback (most recent call last):
  File "./rept.py", line 26, in <module>
    r.publish(name=f'COVID-19 in {" ".join(locations.iso_code)}', open=True, tweet=True, description=f'COVID-19 in {", ".join(locations.location)}')
  File "/home/tig/.local/lib/python3.7/site-packages/datapane/client/api/report.py", line 384, in publish
    res = Resource(self.endpoint).post_files(dict(attachments=attachments), document=report_str, **kwargs)
  File "/home/tig/.local/lib/python3.7/site-packages/datapane/client/api/common.py", line 204, in post_files    e = MultipartEncoder(fields=fields)
  File "/home/tig/.local/lib/python3.7/site-packages/requests_toolbelt/multipart/encoder.py", line 125, in __init__
    self._prepare_parts()
  File "/home/tig/.local/lib/python3.7/site-packages/requests_toolbelt/multipart/encoder.py", line 246, in _prepare_parts
    self.parts = [Part.from_field(f, enc) for f in self._iter_fields()]
  File "/home/tig/.local/lib/python3.7/site-packages/requests_toolbelt/multipart/encoder.py", line 246, in <listcomp>
    self.parts = [Part.from_field(f, enc) for f in self._iter_fields()]
  File "/home/tig/.local/lib/python3.7/site-packages/requests_toolbelt/multipart/encoder.py", line 495, in from_field
    return cls(headers, body)
  File "/home/tig/.local/lib/python3.7/site-packages/requests_toolbelt/multipart/encoder.py", line 488, in __init__
    self.len = len(self.headers) + total_len(self.body)
  File "/home/tig/.local/lib/python3.7/site-packages/requests_toolbelt/multipart/encoder.py", line 432, in total_len
    if hasattr(o, 'len'):
  File "/home/tig/.local/lib/python3.7/site-packages/requests_toolbelt/multipart/encoder.py", line 573, in len
    return total_len(self.fd) - self.fd.tell()
  File "/home/tig/.local/lib/python3.7/site-packages/requests_toolbelt/multipart/encoder.py", line 441, in total_len
    return os.fstat(fileno).st_size
FileNotFoundError: [Errno 2] No such file or directory

Desktop (please complete the following information):

• OS: Windows 10
• Browser: Edge
• Python: 3.7.3

[mands]

Ok - thanks for raising - will look into reproducing and resolving

[votti]

Hi,

I have experienced the same error with Ubuntu 20.04.1 LTS in WSL2 when running the example on Jupyter in a folder located in the mounted Windows file system.

Runnig it from Jupyter in the Ubuntu partition fixes the issue for me.