[SOLVED ]msfconsole DEPRECATION WARNING: Support for Rails < 4.1.0 will be dropped. (called from at /opt/metasploit/apps/pro/ui/lib/metasploit/pro/ui.rb:16)

How to resolved error when you try to open msconsole and appear this message error:

msfconsole DEPRECATION WARNING: Support for Rails < 4.1.0 will be dropped. (called from <top (required)> at /opt/metasploit/apps/pro/ui/lib/metasploit/pro/ui.rb:16)

So, the solution is:

First, execute this command:

gem update
service postgresql start
service  metasploit start
msfconsole -n but if appear the same message:

try msfconsole.framework

Definitely to solve and don't do that again execute this way:

ln -f -s /usr/share/metasploit-framework/msfconsole /usr/sbin/msfconsole

source: https://community.rapid7.com/thread/7388