WebDav interface not enabled: ImportError('cannot import name safe_re_encode',)

[hubitor]

• pyspider version: 0.3.10
• Operating system: Ubuntu 18.04
• Start up command: pyspider all / pyspider

Expected behavior

No Error

Actual behavior

I'm getting this error when I start pyspider:
WebDav interface not enabled: ImportError('cannot import name safe_re_encode',)

How to reproduce

Start pyspider with:
$ pyspider all
OR
$ pyspider

I had this issue before:
#831
#889
which was resolved as suggested in the previous link with:
$ pip install wsgidav==2.4.1