sphinx-err-f1qihx11.log

# Sphinx version: 2.1.1
# Python version: 3.6.1 (CPython)
# Docutils version: 0.14 
# Jinja2 version: 2.10.1
# Last messages:

# Loaded extensions:
Traceback (most recent call last):
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/site-packages/sphinx/cmd/build.py", line 283, in build_main
    args.tags, args.verbosity, args.jobs, args.keep_going)
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/site-packages/sphinx/application.py", line 268, in __init__
    self._init_builder()
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/site-packages/sphinx/application.py", line 329, in _init_builder
    self.events.emit('builder-inited')
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/site-packages/sphinx/events.py", line 103, in emit
    results.append(callback(self.app, *args))
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/site-packages/oslo_config/sphinxconfiggen.py", line 49, in generate_sample
    app.config.sample_config_basename)
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/site-packages/oslo_config/sphinxconfiggen.py", line 87, in _generate_sample
    '--output-file', out_file])
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/site-packages/oslo_config/generator.py", line 783, in main
    generate(conf)
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/site-packages/oslo_config/generator.py", line 744, in generate
    groups = _get_groups(_list_opts(conf.namespace))
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/site-packages/oslo_config/generator.py", line 497, in _list_opts
    for group, group_opts in loader():
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/nova/conf/opts.py", line 45, in list_opts
    imported_modules = _import_modules(module_names)
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/nova/conf/opts.py", line 64, in _import_modules
    mod = importlib.import_module("nova.conf." + modname)
  File "/home/adam/SUSE/cloud/OpenStack/git/nova/.tox/docs/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 674, in exec_module
  File "<frozen importlib._bootstrap_external>", line 888, in get_code
  File "<frozen importlib._bootstrap_external>", line 455, in _validate_bytecode_header
ImportError: bad magic number in 'nova.conf.cells': b'\x03\xf3\r\n'