Make html fails to complete about documentation HOT 6 CLOSED

# Sphinx version: 1.5.5
# Python version: 2.7.13 (CPython)
# Docutils version: 0.13.1 release
# Jinja2 version: 2.9.6
# Last messages:
#   writing output... [  2%] accounting/bank/feeds/qif
#   writing output... [  2%] accounting/bank/feeds/synchronize
#   writing output... [  2%] accounting/bank/misc
#   writing output... [  2%] accounting/bank/misc/batch
#   writing output... [  3%] accounting/bank/misc/interbank
#   writing output... [  3%] accounting/bank/reconciliation
#   writing output... [  3%] accounting/bank/reconciliation/configure
#   writing output... [  3%] accounting/bank/reconciliation/use_cases
#   writing output... [  4%] accounting/bank/setup
#   writing output... [  4%] accounting/bank/setup/create_bank_account
# Loaded extensions:
#   embedded_video (unknown version) from /home/mat/odoo/documentation-user/_extensions/embedded_video.pyc
#   sphinx.ext.todo (1.5.5) from /usr/lib/python2.7/site-packages/sphinx/ext/todo.pyc
#   github_link (unknown version) from /home/mat/odoo/documentation-user/_extensions/github_link.pyc
#   alabaster (0.7.10) from /usr/lib/python2.7/site-packages/alabaster/__init__.pyc
#   html_domain (unknown version) from /home/mat/odoo/documentation-user/_extensions/html_domain.pyc
#   sphinx.ext.ifconfig (1.5.5) from /usr/lib/python2.7/site-packages/sphinx/ext/ifconfig.pyc
#   demo_link (unknown version) from /home/mat/odoo/documentation-user/_extensions/demo_link.pyc
#   odoo (unknown version) from /home/mat/odoo/documentation-user/_extensions/odoo/__init__.pyc
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/sphinx/cmdline.py", line 296, in main
    app.build(opts.force_all, filenames)
  File "/usr/lib/python2.7/site-packages/sphinx/application.py", line 333, in build
    self.builder.build_update()
  File "/usr/lib/python2.7/site-packages/sphinx/builders/__init__.py", line 251, in build_update
    'out of date' % len(to_build))
  File "/usr/lib/python2.7/site-packages/sphinx/builders/__init__.py", line 322, in build
    self.write(docnames, list(updated_docnames), method)
  File "/usr/lib/python2.7/site-packages/sphinx/builders/__init__.py", line 360, in write
    self._write_serial(sorted(docnames), warnings)
  File "/usr/lib/python2.7/site-packages/sphinx/builders/__init__.py", line 368, in _write_serial
    self.write_doc(docname, doctree)
  File "/usr/lib/python2.7/site-packages/sphinx/builders/html.py", line 455, in write_doc
    self.docwriter.write(doctree, destination)
  File "/usr/lib/python2.7/site-packages/docutils/writers/__init__.py", line 80, in write
    self.translate()
  File "/usr/lib/python2.7/site-packages/sphinx/writers/html.py", line 48, in translate
    self.document.walkabout(visitor)
  File "/usr/lib/python2.7/site-packages/docutils/nodes.py", line 174, in walkabout
    if child.walkabout(visitor):
  File "/usr/lib/python2.7/site-packages/docutils/nodes.py", line 174, in walkabout
    if child.walkabout(visitor):
  File "/usr/lib/python2.7/site-packages/docutils/nodes.py", line 174, in walkabout
    if child.walkabout(visitor):
  File "/usr/lib/python2.7/site-packages/docutils/nodes.py", line 166, in walkabout
    visitor.dispatch_visit(self)
  File "/usr/lib/python2.7/site-packages/docutils/nodes.py", line 1882, in dispatch_visit
    return method(node)
  File "/usr/lib/python2.7/site-packages/sphinx/writers/html.py", line 223, in visit_reference
    assert len(node) == 1 and isinstance(node[0], nodes.image)
AssertionError