Running Sphinx v1.8.6
Traceback (most recent call last):
File "/home/docs/checkouts/readthedocs.org/user_builds/flask-seasurf/envs/stable/lib/python3.7/site-packages/sphinx/config.py", line 368, in eval_config_file
execfile_(filename, namespace)
File "/home/docs/checkouts/readthedocs.org/user_builds/flask-seasurf/envs/stable/lib/python3.7/site-packages/sphinx/util/pycompat.py", line 150, in execfile_
exec_(code, _globals)
File "/home/docs/checkouts/readthedocs.org/user_builds/flask-seasurf/checkouts/stable/docs/conf.py", line 53, in <module>
open(module_path))[0]
TypeError: 'filter' object is not subscriptable
Fixes the error when building docs on RTD: