When installing 7.3.X system image, Edge SWG displays the following error:
Deprecation warning: 'client.effective_address'; client.effective_address() is deprecated.
Use client.effective_address.connection() or client.effective_address.request()
"Unable to install new system image: Deprecation warnings were found in Policy. These must be fixed prior to upgrade" 0 950000:96 log_exception.cpp:30
Deprecated CPL construct is present in policy config file
Replace all instances of client.effective_address("$(request.header.x-forwarded-for)") construct with client.effective_address.request("$(request.header.x-forwarded-for)")