Gem uninstall bundler version And install version

$ gem list bundle

bundler (2.0.1)
bundler-audit (0.6.0)
bundler-unload (1.0.2)
rubygems-bundler (1.4.4)

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$ gem uninstall bundler -v '2.0.1'

ERROR:  While executing gem ... (Gem::InstallError)
    bundler is not installed in GEM_HOME, try:
gem uninstall -i /home/bittern-i5-3/.rvm/gems/ruby-2.4.1@global bundler

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 $ gem uninstall -i /home/bittern-i5-3/.rvm/gems/ruby-2.4.1@global bundler
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$ gem install bundler -v '~>1.17.1'

https://dev.to/st0012/completely-remove-the-default-bundler-from-ci-environment-j0c