Traceback (most recent call last):


 "/████/lib/python3.5/site-packages/tornado/httpclient.py", line 99, in __del__


 "/████/lib/python3.5/site-packages/tornado/httpclient.py", line 104, in close


 "/████/lib/python3.5/site-packages/tornado/simple_httpclient.py", line 139, in close


 "/████/lib/python3.5/site-packages/tornado/httpclient.py", line 220, in close
RuntimeError: inconsistent AsyncHTTPClient cache

Traceback (most recent call last):


 "/home/david/projects/watson/.venv/bin/mkdocs", line 10, in <module>

sys.exit(cli())


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/click/core.py", line 764, in __call__

return self.main(*args, **kwargs)


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/click/core.py", line 717, in main

rv = self.invoke(ctx)


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/click/core.py", line 1137, in invoke

return _process_result(sub_ctx.command.invoke(sub_ctx))


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/click/core.py", line 956, in invoke

return ctx.invoke(self.callback, **ctx.params)


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/click/core.py", line 555, in invoke

return callback(*args, **kwargs)


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/mkdocs/cli.py", line 133, in build_command

site_dir=site_dir


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/mkdocs/config/base.py", line 147, in load_config

errors, warnings = cfg.validate()


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/mkdocs/config/base.py", line 80, in validate

self._post_validate()


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/mkdocs/config/base.py", line 72, in _post_validate

config_option.post_validation(self, key_name=key)


 "/home/david/projects/watson/.venv/lib/python3.7/site-packages/mkdocs/config/config_options.py", line 345, in post_validation

for filename in self.walk_docs_dir(config['docs_dir']):
RuntimeError: generator raised StopIteration
