ValueError: Buffer has wrong number of dimensions (expected 2, got 0) about ultranest HOT 1 OPEN

Hmm, this is rather strange.

Can it be that you run out of live points?

According to the debug.log, you have a likelihood plateau, interestingly not at the beginning of the run but after a few iterations.

Maybe you want to check why all the points then return loglike=-5841.19.

That said, this error message is not very helpful, and it should be handled better. But I don't quite understand how this occurs.

Maybe putting a few prints in these lines could help debug:

  "/home/pietro/anaconda3/envs/pandora_env/lib/python3.9/site-packages/ultranest/integrator.py", line 369
  File "ultranest/mlfriends.pyx", line 855, in ultranest.mlfriends.MLFriends.compute_enlargement
  File "ultranest/mlfriends.pyx", line 388, in ultranest.mlfriends.bounding_ellipsoid
  File "ultranest/mlfriends.pyx", line 303, in ultranest.mlfriends.make_eigvals_positive

In particular: Is the list of live points empty? What is the highest level loop where this occurs?
In integrator.py, perhaps the integration should stop when the live points cannot be replaced.

from ultranest.