After updating to gapic generator version 0.46.3, there is a sphinx warning. Googlers, see log here. I resolved the issue in this commit by adding a new line here ...
Since about 2021-05-09, the "Test documentation build using Sphinx" step of the "pytest" CI workflow is failing—with messages like the following, and only on Python 3.6 jobs (not Python 3.8). This is ...