Description:
When starting metasploit asks me for ruby gems that are rake 12.3.0 and grpc-1.7.3

Throwing this error
Could not find rake-12.3.0 in any of the sources
Run `bundle install` to install missing gems.

Solved
# gem install rake

but then he showed me this other

Could not find grpc-1.7.3 in any of the sources
Run `bundle install` to install missing gems.

Apply this command
# bundle install

And I just install some gems but do not solve the problem

Then apply this other command to install grpc
# gem install grpc

I throw this error
WARNING: You do not have /root/.gem/ruby/2.5.0/bin in your PATH,
gem executables will not run.
ERROR: Error installing grpc:
The last version of grpc (> = 0) to support your Ruby & RubyGems was 1.8.0. Try installing it with `gem install grpc -v 1.8.0`
grpc requires Ruby version <2.5,> = 2.0. The current ruby version is 2.5.0.

Apply this other command and nothing still comes out
# gem install grpc -v 1.8.0

Additional info:
* package version(s)

* config and/or log files etc.


Steps to reproduce: