./bin/rake db:migrate db:seed db:test:prepare
Traceback (most recent call last):
	4: from ./bin/rake:2:in `<main>'
	3: from ./bin/rake:2:in `require_relative'
	2: from /home/tanzeem/openproject-dev/openproject/config/boot.rb:39:in `<top (required)>'
	1: from /home/tanzeem/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
/home/tanzeem/.rvm/rubies/ruby-2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require': cannot load such file -- bundler/setup (LoadError)