PackagesNotFoundError: The following packages are not available from current channels: - simpletraj Current channels: - https://conda.anaconda.org/conda-forge/osx-arm64 - https://repo.anaconda.com/pkgs/main/osx-arm64 - https://repo.anaconda.com/pkgs/r/osx-arm64 To search for alternate channels that may provide the conda package you're looking for, navigate to https://anaconda.org and use the search bar at the top of the page.