conda installation not working

[miquelduranfrigola]

Hi, I am having trouble installing skchem through conda in my Ubuntu 20.04:

I first create the environment:
conda create -n skchem python=3.5
conda activate skchem

Then I try to install skchem:
conda install -c richlewis scikit-chem

Unfortunately, I get the following error message:

Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Solving environment: | 
Found conflicts! Looking for incompatible packages.
This can take several minutes.  Press CTRL-C to abort.
failed                                                                                                                   

UnsatisfiableError: The following specifications were found to be incompatible with each other:

Output in format: Requested package -> Available versions

[sgujjaABM]

Hi,
I am getting the same error. Can you please please let me know if there's a solution to fix this?
Thanks
Shar