Dear Ricardo,
I thank You for your reply.
The thing is that I can successfully run the first line of the installation code you indicated in the Anaconda Prompt.
(pm3env) C:\Users\Tihamér>conda create -c conda-forge -n pymc_env “pymc>=5”
WARNING: A conda environment already exists at ‘C:\Users\Tihamér.conda\envs\pymc_env’
However, when I try to run the second line of the installation code: conda activate pymc_env
I am encountered the following error message:
(pm3env) C:\Users\Tihamér>conda activate pymc_env
Error message: The system cannot find the specified path.
Any idea how can we fix this?
Anyway, I have just corrected my bayesian code from pymc3 to pymc and with many warnings but finally it has worked out, I thank you for your idea!