
Traceback (most recent call last):

 "/usr/lib/python2.7/atexit.py", line 24, in _run_exitfuncs
func(*targs, **kargs)

 "/usr/lib/python2.7/multiprocessing/util.py", line 284, in _exit_function
info('process shutting down')
TypeError: 'NoneType' object is not callable
Traceback (most recent call last):


 "/usr/local/lib/python2.7/dist-packages/sphinx/cmdline.py", line 306, in main

app.build(opts.force_all, filenames)


 "/usr/local/lib/python2.7/dist-packages/sphinx/application.py", line 332, in build

self.builder.build_all()


 "/usr/local/lib/python2.7/dist-packages/sphinx/builders/__init__.py", line 285, in build_all

self.build(None, summary='all source files', method='all')


 "/usr/local/lib/python2.7/dist-packages/sphinx/builders/__init__.py", line 394, in build

self.write(docnames, list(updated_docnames), method)


 "/usr/local/lib/python2.7/dist-packages/sphinx/builders/__init__.py", line 431, in write

self._write_serial(sorted(docnames))


 "/usr/local/lib/python2.7/dist-packages/sphinx/builders/__init__.py", line 440, in _write_serial

self.write_doc(docname, doctree)


 "/usr/local/lib/python2.7/dist-packages/sphinx/builders/html.py", line 556, in write_doc

self.handle_page(docname, ctx, event_arg=doctree)


 "/usr/local/lib/python2.7/dist-packages/sphinx/builders/html.py", line 940, in handle_page

output = self.templates.render(templatename, ctx)


 "/usr/local/lib/python2.7/dist-packages/sphinx/jinja2glue.py", line 176, in render

return self.environment.get_template(template).render(context)


 "/usr/local/lib/python2.7/dist-packages/jinja2/environment.py", line 1008, in render

return self.environment.handle_exception(exc_info, True)


 "/usr/local/lib/python2.7/dist-packages/jinja2/environment.py", line 780, in handle_exception

reraise(exc_type, exc_value, tb)


 "/usr/local/lib/python2.7/dist-packages/sphinx/themes/basic/page.html", line 10, in top-level template code

{%- extends "layout.html" %}


 "/usr/local/lib/python2.7/dist-packages/f5_sphinx_theme/layout.html", line 3, in top-level template code

{% set css_files = css_files + ["_static/css/f5.css", "_static/css/custom.css"] %}


 "/usr/local/lib/python2.7/dist-packages/sphinx/themes/classic/../classic/layout.html", line 13, in top-level template code

{% set script_files = script_files + ['_static/sidebar.js'] %}


 "/usr/local/lib/python2.7/dist-packages/sphinx/themes/classic/../basic/layout.html", line 128, in top-level template code

{%- block csss %}


 "/usr/local/lib/python2.7/dist-packages/sphinx/themes/classic/../basic/layout.html", line 129, in block "csss"

{{ css() }}


 "/usr/local/lib/python2.7/dist-packages/jinja2/sandbox.py", line 427, in call

return __context.call(__obj, *args, **kwargs)


 "/usr/local/lib/python2.7/dist-packages/jinja2/runtime.py", line 553, in _invoke

rv = self._func(*arguments)


 "/usr/local/lib/python2.7/dist-packages/sphinx/themes/classic/../basic/layout.html", line 108, in template

{%- for css in css_files %}
TypeError: 'NoneType' object is not iterable
