I have problems when changing Rails bundler version

After cloning a rails project on Github and running the command "rails s", the machine needs to get the older bundle> = 1 .3 && <2.0 (my current version is 2.1.4). I went to the homepage to check the version and ran the command "gem install Bundler -v 2.0.0.pre.1" and then ran "Bundler 2.0.1.pre1 install" but CMD reported that the package could not be found). What should i do, please ?