Try downgrading Sphinx to version 6 (from 7) for Read the Docs.

Seems sphinx-rtd-theme 1.* is incompatible with Sphinx 7. Could also be that sphinx-rtd-theme version was not constrained and an older version was being used by default in Read the Docs. See readthedocs/readthedocs.org#10279
EarthByte · Sep 19, 2023 · 371bbe1 · 371bbe1
1 parent 51e0966
commit 371bbe1
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -1,5 +1,5 @@
 numpy
 scipy
 mock
-sphinx==7.0.1
-sphinx-rtd-theme
+sphinx==6.2.1
+sphinx-rtd-theme==1.2.2