There was an error while trying to load the gem 'mysql2'. Gem Load Error is: uninitialized constant Mysql2::Client::SECURE_CONNECTION

[cs-chandu]

chandu@Chandu:~/Documents/angel_nest$ rake db:create rake aborted! There was an error while trying to load the gem 'mysql2'. Gem Load Error is: uninitialized constant Mysql2::Client::SECURE_CONNECTION Backtrace for gem load error is: /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/ext/module.rb:36:in const_missing'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11/lib/mysql2/client.rb:12:in <class:Client>' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11/lib/mysql2/client.rb:2:in module:Mysql2'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11/lib/mysql2/client.rb:1:in <top (required)>' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11/lib/mysql2.rb:10:in require'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/mysql2-0.3.11/lib/mysql2.rb:10:in <top (required)>' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/bundler-1.14.6/lib/bundler/runtime.rb:91:in require'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/bundler-1.14.6/lib/bundler/runtime.rb:91:in block (2 levels) in require' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/bundler-1.14.6/lib/bundler/runtime.rb:86:in each'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/bundler-1.14.6/lib/bundler/runtime.rb:86:in block in require' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/bundler-1.14.6/lib/bundler/runtime.rb:75:in each'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/bundler-1.14.6/lib/bundler/runtime.rb:75:in require' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/gems/1.9.1/gems/bundler-1.14.6/lib/bundler.rb:107:in require'
/home/chandu/Documents/angel_nest/config/application.rb:13:in <top (required)>' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require' /home/chandu/Documents/angel_nest/Rakefile:5:in <top (required)>'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/rake_module.rb:25:in load' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/rake_module.rb:25:in load_rakefile'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/application.rb:501:in raw_load_rakefile' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/application.rb:82:in block in load_rakefile'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/application.rb:133:in standard_exception_handling' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/application.rb:81:in load_rakefile'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/application.rb:65:in block in run' /home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/application.rb:133:in standard_exception_handling'
/home/chandu/.rbenv/versions/1.9.3-p551/lib/ruby/1.9.1/rake/application.rb:63:in run' /home/chandu/.rbenv/versions/1.9.3-p551/bin/rake:32:in

'
Bundler Error Backtrace:

(See full trace by running task with --trace)
chandu@Chandu:~/Documents/angel_nest$
`

I am getting above error... I dont know what to do trying since last three days .. BTW I am using Ubuntu 16.04 machine, RubyEnv ~ Ruby 1.9.3 , Rails 3.2.2 . Somebody said its because of mysql version so I am downgrading to 5.1. will it works??
Please help me with this.