Error parsing 'Gemfile'

[erathia65]

Fresh install of Turnkey redmine LXC container redmine_2fa version: https://github.com/southbridgeio/redmine_2fa/commit/2312a2067ee3af3deb168edc7a224de28fe9bede redmine version: redmine turnkey version:

installed redmine agile without issue, went on to install 2fa

[!] There was an error parsing `Gemfile`: 
[!] There was an error parsing `Gemfile`: You cannot specify the same gem twice with different version requirements.
You specified: rotp (>= 0) and rotp (~> 4.0). Bundler cannot continue.

 #  from /var/www/redmine/plugins/redmine_2fa/Gemfile:4
 #  -------------------------------------------
 #  gem 'active_model_otp', git: 'https://github.com/heapsource/active_model_otp.git', ref: '6ed9927'
 >  gem 'rotp', '~> 4.0'
 #  gem 'rqrcode', '~> 1.0'
 #  -------------------------------------------
. Bundler cannot continue.

 #  from /var/www/redmine/Gemfile:108
 #  -------------------------------------------
 #  Dir.glob File.expand_path("../plugins/*/{Gemfile,PluginGemfile}", __FILE__) do |file|
 >    eval_gemfile file
 #  end
 #  -------------------------------------------