ModuleNotFoundError: No module named 'conda'

I just successfully installed Anaconda 3 on MacOS and whatever the conda command I try, I get:

Traceback (most recent call last):
File “/opt/anaconda3/bin/conda”, line 12, in
from conda.cli import main
ModuleNotFoundError: No module named ‘conda’

This look like a recurring bug that was never fixed. Any idea?