.../miniconda3/etc/conda/activate.d/jcc-activate.sh:12: = not found

This is my first forum post. I tried installing JCC just now on macOS Big Sur 11.1,
as per https://pypi.org/project/JCC/, i.e.,
% pip install JCC
and it finishes by saying
…/miniconda3/etc/conda/activate.d/jcc-activate.sh:12: = not found
and this line now shows up when I open a new terminal.

Any suggestions how to solve? I can’t find anything on the web.