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When building my Projekt on RTD I get a stacktrace which I can't reproduce locally.
Running Sphinx v1.8.5
loading translations [en]... done
making output directory...
loading intersphinx inventory from https://docs.python.org/3/objects.inv...
building [mo]: targets for 0 po files that are out of date
building [html]: targets for 27 source files that are out of date
updating environment: 27 added, 0 changed, 0 removed
reading sources... [ 3%] cobbler
Traceback (most recent call last):
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/cmd/build.py", line 304, in build_main
app.build(args.force_all, filenames)
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/application.py", line 341, in build
self.builder.build_update()
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/builders/__init__.py", line 347, in build_update
len(to_build))
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/builders/__init__.py", line 360, in build
updated_docnames = set(self.read())
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/builders/__init__.py", line 468, in read
self._read_serial(docnames)
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/builders/__init__.py", line 490, in _read_serial
self.read_doc(docname)
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/builders/__init__.py", line 534, in read_doc
doctree = read_doc(self.app, self.env, self.env.doc2path(docname))
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/io.py", line 318, in read_doc
pub.publish()
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/docutils/core.py", line 219, in publish
self.apply_transforms()
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/docutils/core.py", line 200, in apply_transforms
self.document.transformer.apply_transforms()
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/transforms/__init__.py", line 90, in apply_transforms
Transformer.apply_transforms(self)
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/docutils/transforms/__init__.py", line 171, in apply_transforms
transform.apply(**kwargs)
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/transforms/__init__.py", line 245, in apply
apply_source_workaround(n)
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/util/nodes.py", line 94, in apply_source_workaround
for classifier in reversed(node.parent.traverse(nodes.classifier)):
TypeError: 'generator' object is not reversible
Exception occurred:
File "/home/docs/checkouts/readthedocs.org/user_builds/cobbler/envs/latest/lib/python3.7/site-packages/sphinx/util/nodes.py", line 94, in apply_source_workaround
for classifier in reversed(node.parent.traverse(nodes.classifier)):
TypeError: 'generator' object is not reversible
The full traceback has been saved in /tmp/sphinx-err-id_ia31r.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
This is another duplicate of #9810.
As these duplicates keep coming, maybe considering the long term support request for 1.x and 2.x in #9807 may ease not only RTD users frustration but also Sphinx developers issue maintenance burden.
Describe the bug
When building my Projekt on RTD I get a stacktrace which I can't reproduce locally.
How to Reproduce
Expected behavior
Project builds successfully.
Your project
https://readthedocs.org/projects/cobbler
Screenshots
No response
OS
Linux
Python version
3.7
Sphinx version
1.8.5
Sphinx extensions
sphinx.ext.autodoc, sphinx.ext.doctest, sphinx.ext.intersphinx, sphinx.ext.todo', 'sphinx.ext.coverage, sphinx.ext.mathjax, sphinx.ext.ifconfig, sphinx.ext.viewcode
Extra tools
No response
Additional context
https://readthedocs.org/projects/cobbler/builds/15157681/
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