HomebrewでImageMagickをインストールした後に、railsでエラーが発生した。

前提・実現したいこと

Web初心者で、Rails Tutorialの１３章に取り組んでいるときに、下記のコマンドでImageMagickをインストールしました。

$brew install imagemagick

発生している問題・エラーメッセージ

上記のインストールを実行した後に、rails serverを中断して、再起動したところ、次のようなエラーが出ました。

Traceback (most recent call last):
	23: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/bin/rails:23:in `<main>'
	22: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/bin/rails:23:in `load'
	21: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/exe/rails:9:in `<top (required)>'
	20: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
	19: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
	18: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/cli.rb:16:in `<top (required)>'
	17: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/command.rb:42:in `invoke'
	16: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/command.rb:68:in `find_by_namespace'
	15: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/command/behavior.rb:77:in `lookup'
	14: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/command/behavior.rb:77:in `each'
	13: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/command/behavior.rb:78:in `block in lookup'
	12: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/command/behavior.rb:78:in `each'
	11: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/command/behavior.rb:82:in `block (2 levels) in lookup'
	10: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
	 9: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
	 8: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/commands/application/application_command.rb:2:in `<top (required)>'
	 7: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
	 6: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
	 5: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/generators/rails/app/app_generator.rb:1:in `<top (required)>'
	 4: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
	 3: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
	 2: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/gems/2.5.0/gems/railties-5.1.7/lib/rails/generators/app_base.rb:2:in `<top (required)>'
	 1: from /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require'
/Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require': dlopen(/Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/x86_64-darwin16/digest/md5.bundle, 9): Library not loaded: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib (LoadError)
  Referenced from: /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/x86_64-darwin16/digest/md5.bundle
  Reason: image not found - /Users/ks-live-in-tokyo/.rbenv/versions/2.5.5/lib/ruby/2.5.0/x86_64-darwin16/digest/md5.bundle

初めはわからずに、一度ImageMagickをアンインストールしたりしたのですが、関係はなさそうでした。
どうやらMD5に関わることなのか、ということはうっすらわかるのですが、どのように対処すべきか、分かりかねています。
ぜひアドバイスをいただければと思います。