TypeError: 'NoneType' when writing output

[damaskino]

Hi there, I ran into an error while trying to generate the documentation for slixmpp
https://github.com/poezio/slixmpp

After cloning the slixmpp repository, I tried to generate the documentation with:

cd docs
make html

This always produces the following error for me:

Exception occurred:
  File "/usr/lib/python3.6/site-packages/sphinx/themes/haiku/../basic/layout.html", line 108, in template
    {%- for css in css_files %}
TypeError: 'NoneType' object is not iterable

Error log:

sphinx-err-pg213tb8.txt

Environment info

• OS: Linux
• Python version: 3.6.1
• Sphinx version: 1.6.1
• Docutils version: 0.13.1 release

[shimizukawa]

It has been fixed at 1.6.2 release.
Please update and try it.

[tk0miya]

I close this because duplicated with #3754.
Please reopen if you still get the error after upgrading to 1.6.2.

[damaskino]

Works now, after upgrading to sphinx 1.6.2 thanks a lot! :)