ERROR: clarifai 2.6.2 has requirement jsonschema<3,>=2.5, but you'll have jsonschema 3.0.2 which is incompatible.

I also have an error of "Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/certifi-2019.6.16.dist-info'
Consider using the `--user` option or check the permissions.
"

using Mac