problem with ttvfast and sse support

[svaverbe]

On the system Leftraru, we have the following error while importing ttvfast in python:
Traceback (most recent call last):
File "/home/svanaverbeke/EXPLORE/WASP-12b/ttv_model_obs_WASP-12b.py", line 6, in
import ttvfast
File "/home/svanaverbeke/.conda/envs/science/lib/python3.9/site-packages/ttvfast/init.py", line 5, in
from ._ttvfast import _ttvfast as ttvfast_fn
ImportError: /home/svanaverbeke/.conda/envs/science/lib/python3.9/site-packages/ttvfast/ttvfast.cpython-39-x86_64-linux-gnu.so: undefined symbol: __libm_sse2_sincos
srun: error: cn082: task 0: Exited with exit code 1

Apparently there is a problem with one of the numeric libraries for optimizing floating point computations. Have you seen this error before on other systems and can it be fixed by changing the makefile ? Or is another operation necessaey ?

Siegfried