Redmine

bundle install --without development test rmagick

[!] There was an error parsing `Gemfile`: compile error - syntax error, unexpected ':', expecting $end
gem 'tzinfo-data', platforms: [:mingw, :x64_mingw, :mswin, :jruby]
^. Bundler cannot continue.

1. from C:/inetpub/wwwroot/redmine/Gemfile:18
2. -------------------------------------------
3. eval_gemfile file
   > end
4. source 'https://rubygems.org'
5. -------------------------------------------

attached is my gem file.

please advise

I am new to redmine.