Could not import extension sphinxcontrib.mermaid (exception: cannot import name 'ExtensionError' from 'sphinx.util' ...

[IHMEkaleb]

Description

When I run sphinx-build with sphinxcontrib.mermaid 0.9.2 and sphinx 8.1.0, I get this error:

sphinx-build /path/to/docs /path/for/build/output
Running Sphinx v8.1.0
loading translations [en]... done

Extension error:
Could not import extension sphinxcontrib.mermaid (exception: cannot import name 'ExtensionError' from 'sphinx.util' (/path/to/my_env/lib/python3.11/site-packages/sphinx/util/__init__.py))

However, with sphinx 8.0.x, it builds fine.

Steps to reproduce

1. Install sphinxcontrib.mermaid 0.9.2 and sphinx 8.1.0, and add the extension.
2. Run sphinx-build.
3. Build fails.

Screenshots

No response

Code Sample

No response

Setup

• Mermaid version: 0.9.2
• sphinx version: 8.1.0

Suggested Solutions

Maybe find alternative to sphinx.util.ExtensionError?
I don't see any explicit reference to dropping it in the sphinx changelog: https://www.sphinx-doc.org/en/master/changes/index.html

Additional Context

No response

[IHMEkaleb]

Filed issue with sphinx: sphinx-doc/sphinx#13002

[AA-Turner]

This isn't an issue with mermaid-js and can be closed.

A

[IHMEkaleb]

This isn't an issue with mermaid-js and can be closed.

A

Sphinx maintainers recommend using "the proper import location for sphinx.errors.ExtensionError": sphinx-doc/sphinx#13002 (comment)