AttributeError: 'MkdocsPageSubset' object has no attribute 'file'. Did you mean: 'title'? #404
Description
When running with Material for MkDocs 9.7.0, I get the following trace:
Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.14.0/x64/bin/mkdocs", line 7, in <module>
sys.exit(cli())
~~~^^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/click/core.py", line 1462, in __call__
return self.main(*args, **kwargs)
~~~~~~~~~^^^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/click/core.py", line 1383, in main
rv = self.invoke(ctx)
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/click/core.py", line 1850, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/click/core.py", line 1246, in invoke
return ctx.invoke(self.callback, **ctx.params)
~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/click/core.py", line 814, in invoke
return callback(*args, **kwargs)
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/mkdocs/__main__.py", line 288, in build_command
build.build(cfg, dirty=not clean)
~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/mkdocs/commands/build.py", line 347, in build
config.plugins.on_post_build(config=config)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/mkdocs/plugins.py", line 602, in on_post_build
return self.run_event('post_build', config=config)
~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/mkdocs/plugins.py", line 568, in run_event
result = method(**kwargs)
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/mkdocs_rss_plugin/plugin.py", line 405, in on_post_build
self.util.load_images_for_pages(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
self.feed_created.entries, config.site_url, processed_refs
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/mkdocs_rss_plugin/util.py", line 575, in load_images_for_pages
page_info.image = self.get_image(
~~~~~~~~~~~~~~^
in_page=page_info._mkdocs_page_ref, base_url=base_url
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/mkdocs_rss_plugin/util.py", line 622, in get_image
elif img_local_build_path := self.social_cards.get_social_card_build_path_for_page(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
mkdocs_page=in_page
^^^^^^^^^^^^^^^^^^^
):
^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/mkdocs_rss_plugin/integrations/theme_material_social_plugin.py", line 282, in get_social_card_build_path_for_page
and self.integration_material_blog.is_page_a_blog_post(mkdocs_page)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
File "/opt/hostedtoolcache/Python/3.14.0/x64/lib/python3.14/site-packages/mkdocs_rss_plugin/integrations/theme_material_blog_plugin.py", line 143, in is_page_a_blog_post
return Path(mkdocs_page.file.src_uri).is_relative_to(
^^^^^^^^^^^^^^^^
AttributeError: 'MkdocsPageSubset' object has no attribute 'file'. Did you mean: 'title'?
I got this in the action run for gaseri/website, which previously worked fine (i.e. with older version of Material for MkDocs).
I don't have time to debug this further right now, but I can try to produce a minimal non-working example soon if that would be useful.