我一直在尝试为jekyll安装jekyll-responsive-image插件。当我尝试将其安装为设置中提到的gem时，我收到以下错误：
> ERROR: Error installing jekyll-responsive_image:
> ERROR: Failed to build gem native extension.
>
> C:/Ruby23/bin/ruby.exe extconf.rb
> *** 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
> --without-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=C:/Ruby23/bin/$(RUBY_BASE_NAME) extconf.rb:110:in ``': No such file or directory - identify -version (Errno::ENOENT)
> from extconf.rb:110:in `configure_compile_options'
> from extconf.rb:16:in `initialize'
> from extconf.rb:517:in `new'
> from extconf.rb:517:in `<main>'
>
> extconf failed, exit code 1
>
> Gem files will remain installed in
> C:/Ruby23/lib/ruby/gems/2.3.0/gems/rmagick-2.15.4 for inspection.
> Results logged to
> C:/Ruby23/lib/ruby/gems/2.3.0/extensions/x86-mingw32/2.3.0/rmagick-2.15.4/gem_make.out
> Temporarily enhancing PATH to include DevKit... Building native
> extensions. This could take a while...
可能是什么问题？