Metaphlan in human 3.9 pipeline not finding read_fastx.py

Hi I am running human 3.9 on ssh server and get the following Error message returned from metaphlan :

OSError: fatal error running ‘[path to conda env]/lib/python3.12/site-packages/metaphlan/utils/read_fastx.py’. Is it in the system path?

We have checked and the read_fastx.py is in this location.

We have also tried running with metaphlan 4.1.1 and 4.0.6, and get the same error.

Thank you