in reply to
Re^4: Protocol scheme 'http' is not supported
in thread Protocol scheme 'http' is not supported
It does actually look like you have two perls installed.
Look at your whereis output, /usr/bin/perl vs /usr/local/bin/perl
You can verify this further by doing /usr/bin/perl -V and /usr/local/bin/perl -V
I had a similar problem after a release-upgrade on my ubuntu-server.
Unfortunately my only solution was to reinstall the system.