Issues in Anaconda Jupyter terminal

When you have a Macbook, and I trying to install this code: conda env create -f https://quantra.quantinsti.com/downloads/machinelearning/environment.yml, in the Terminal under anaconda/jupyter, and this give you an error like this: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘ProxyError(‘Cannot connect to proxy.’, OSError(‘Tunnel connection failed: 403 Forbidden’))’: /downloads/machinelearning/environment.yml

Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘ProxyError(‘Cannot connect to proxy.’, OSError(‘Tunnel connection failed: 403 Forbidden’))’: /downloads/machinelearning/environment.yml

Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by ‘ProxyError(‘Cannot connect to proxy.’, OSError(‘Tunnel connection failed: 403 Forbidden’))’: /downloads/machinelearning/environment.yml

ProxyError: Conda cannot proceed due to an error in your proxy configuration.
Check for typos and other configuration errors in any ‘.netrc’ file in your home directory,
any environment variables ending in ‘_PROXY’, and any other system-wide proxy
configuration settings.

please can help me to resolved this issue?