[alert]: Unable to start the Phusion Passenger watchdog because its executable (/usr/local/rvm/gems/ree-1.8.7-2011.03/gems/passenger-3.0.7/agents/PassengerWatchdog) does not exist. This probably means that your Phusion Passenger installation is broken or incomplete, or that your 'passenger_root' directive is set to the wrong value. Please reinstall Phusion Passenger or fix your 'passenger_root' directive, whichever is applicable. (-1: Unknown error 18446744073709551615)