With a fresh install of Leap 15.4 and installing OPI the error seen when attempting to install Codecs is:
Unexpected exception.
Url scheme is a required component
Please file a bug report about this.
See http://en.opensuse.org/Zypper/Troubleshooting for instructions.
With a fresh install of Leap 15.4 and installing OPI the error seen when attempting to install Codecs is: