ERROR: Curl failed with error = 0

We are trying to install the license keys for our PGI Fortran workstation.
When running the PGI license tool /usr/pgi/linux86-64/11.3/bin/pgi_license_tool
We get the Error

ERROR: Curl failed with error = 0

What does this mean? Help please!

Sounds like a login error. Make sure you have the correct login credentials entered.