Error with download() and download_sync() in 3.14.6

[TXST-ITAC-SAAS]

Steps to reproduce

1. docker run -it python:3.9-slim-buster bash
2. pip3 install webdavclient3==3.14.6
3. run script:
   from webdav3.client import Client
options = { 'webdav_hostname': HOSTNAME, 'webdav_login': LOGIN, 'webdav_password': PASSWORD, 'webdav_root': DAVROOT, 'disable_check': True }
client = Client(options)
client.download(remote_path=TESTFILE,local_path="./test.txt")

Error

Traceback (most recent call last):
File "//webdav-test.py", line 13, in
client.download(remote_path=TESTFILE,local_path="./test.txt")
File "/usr/local/lib/python3.9/site-packages/webdav3/client.py", line 397, in download
self.download_file(local_path=local_path, remote_path=remote_path, progress=progress,
File "/usr/local/lib/python3.9/site-packages/webdav3/client.py", line 67, in _wrapper
res = fn(self, *args, **kw)
File "/usr/local/lib/python3.9/site-packages/webdav3/client.py", line 458, in download_file
total = int(response.headers['content-length'])
File "/usr/local/lib/python3.9/site-packages/requests/structures.py", line 54, in getitem
return self._store[key.lower()][1]
KeyError: 'content-length'

Current workaround
Force downgrade to 3.14.5: pip3 install webdavclient3==3.14.5