CMake Error at cmake-proxies/cmake-modules/AudacityDependencies.cmake

When I run cmake I get:

CMake Error at cmake-proxies/cmake-modules/AudacityDependencies.cmake:209 (message):
Conan failed to install dependencies (1) /usr/bin/python3.11
Call Stack (most recent call first):
CMakeLists.txt:592 (include)

I have /usr/bin/python3.11. What does this error mean?

Audacity 4 uses new tooling. See: Master has been switched to 4.0.0 development

I don’t understand this message. I should have noted in my original post that I use 3.6.4, downloaded as a tarball on 2024 October 15.