“conda install -c conda-forge ecole” is failed.

[ArchyYu-noHangUp]

I want to install ecole on remote linux server. After I input "conda install -c conda-forge ecole", the answer is always
"Collecting package metadata (current_repodata.json): / WARNING conda.models.version:get_matcher(556): Using .* with relational operator is superfluous and deprecated and will be removed in a future version of conda. Your spec was 1.7.1., but conda is ignoring the . and treating it as 1.7.1
done
Solving environment: unsuccessful initial attempt using frozen solve. Retrying with flexible solve.
Solving environment: unsuccessful attempt using repodata from current_repodata.json, retrying with next repodata source."

How to deal with it. Please help me. Thanks.

conda update -n base conda conda config --add channels conda-forge conda config --set channel_priority strict conda install -c conda-forge ecole
are done.