This is a minimal working example for sphinx including autodoc, autosummary, and sphinx-gallery.
The sphinx-mwe-bug folder includes a bug. This is due to an Alias class being created in the module.
This is a minimal example showing a bug with upper and lowercase, i.e. creating a documentation from a python file like
class Colorbar():
# ...
def colorbar():
# ...
where two objects differ just between upper and lower case leads to an error.