Fortran runtime error

[SuoNa-Surfer]

Hi, I'm running my program on a 14.4.1 (23E224) MacOS, and I got the following error:

MultiNest v3.10
Copyright Farhan Feroz & Mike Hobson
Release Jul 2015

no. of live points = 400
dimensionality = 13

---

Starting MultiNest
At line 233 of file /Users/runner/miniforge3/conda-bld/multinest_1604152338636/work/src/nested.F90 (unit = 55)
Fortran runtime error: Cannot open file 'chains/clusterev.dat': No such file or directory

I tried checking the content of the directory itself, but when I use ls under /Users I don't seem to have the runner folder(?
Also tried reading the nested.F90 code, still not sure where the 'chains/clusterev.dat' should have been created.
Could this be some installation issue which misplaces the dat file?
Thank you for your time!

[JohannesBuchner]

MultiNest does not create directories.
You have to make the directories that you point to as output directory..
See for example:
https://github.com/JohannesBuchner/PyMultiNest/blob/master/pymultinest_demo.py