Hi Christopher Sangwin,
I followed the instructions from page and installed stack
https://github.com/maths/moodle-qtype_stack/blob/master/doc/en/Installation/index.md and installed stack.
Even optimized the maxima with the help of page
The page hangs when I click on healthcheck script.
I get the error "Timed out while waiting for session lock." while running healthcheck script or when creating a stack question at logs.
Attached the error from log.
maxima 5.27.0 (compiled maxima source-code with clisp 2.49 and installed)
Could you help me in solving the issue. Thanks