Hello,
I am pretty sure that it is saying that legacy os agents use jre 1.6 and that is what you have - which the action doesn't support. I think you'll need to either install an updated agent. Or, if you're using the generic agent (which is short for the installer that is not specific for an operating system) then you might be able to:
a. install an updated jre.
b. point the symbolic link used by AgentInstallDir/jre/bin/NolioAgent (and some other dirs) to the updated jre. But this (NolioAgent being a symbolic link) is something you would only see if you were using the generic agent.
Kind regards,
Gregg