UnavailableInvalidChannel: HTTP 404 UNAVAILABLE OR INVALID for channel channel <file:///tmp/channel> The channel is not accessible or is invalid. You will need to adjust your conda configuration to proceed. Use `conda config --show channels` to view your configuration's current state, and use `conda config --show-sources` to view config file locations. As of conda 4.3, a valid channel must contain a `noarch/repodata.json` and associated `noarch/repodata.json.bz2` file, even if `noarch/repodata.json` is empty. Use `conda index /tmp/channel`, or create `noarch/repodata.json` and associated `noarch/repodata.json.bz2`.