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Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:
/Users/ignacioainolrivera/.rvm/gems/ruby-2.4.2/gems/capybara-webkit-1.15.0
/Users/ignacioainolrivera/.rvm/rubies/ruby-2.4.2/bin/ruby -r
./siteconf20180529-6828-e3rerw.rb extconf.rb
sh: qmake: command not found
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/Users/ignacioainolrivera/.rvm/rubies/ruby-2.4.2/bin/$(RUBY_BASE_NAME)
    --with-gl-dir
    --without-gl-dir
    --with-gl-include
    --without-gl-include=${gl-dir}/include
    --with-gl-lib
    --without-gl-lib=${gl-dir}/lib
    --with-zlib-dir
    --without-zlib-dir
    --with-zlib-include
    --without-zlib-include=${zlib-dir}/include
    --with-zlib-lib
    --without-zlib-lib=${zlib-dir}/lib
Command 'qmake LIBS\ \+\=\ -L/usr/local/opt/libyaml/lib\
-L/usr/local/opt/readline/lib\ -L/usr/local/opt/libksba/lib\
-L/usr/local/opt/openssl@1.1/lib' not available

extconf failed, exit code 1

Gem files will remain installed in
/Users/ignacioainolrivera/.rvm/gems/ruby-2.4.2/gems/capybara-webkit-1.15.0 for
inspection.
Results logged to
/Users/ignacioainolrivera/.rvm/gems/ruby-2.4.2/extensions/x86_64-darwin-16/2.4.0/capybara-webkit-1.15.0/gem_make.out

An error occurred while installing capybara-webkit (1.15.0), and
Bundler cannot continue.
Make sure that `gem install capybara-webkit -v '1.15.0'` succeeds before
bundling.

In Gemfile:
  capybara-webkit