After Ruby updated on the end of March, some may found bundle exec jekyll serve not worked, and come the following error messages:
Dependency Error: Yikes! It looks like you don't have jemoji or one of its
dependencies installed. In order to use Jekyll as currently configured,
you'll need to install this gem. The full error message from Ruby is:
'dlopen(/usr/local/lib/ruby/gems/2.4.0/gems/nokogiri-1.7.1/lib/nokogiri/nokogiri.bundle, 9):
Library not loaded:
/usr/local/opt/ruby/lib/libruby.2.4.0.dylib
Referenced from:
/usr/local/lib/ruby/gems/2.4.0/gems/nokogiri-1.7.1/lib/nokogiri/nokogiri.bundle
Reason:
image not found - /usr/local/lib/ruby/gems/2.4.0/gems/nokogiri-1.7.1/lib/nokogiri/nokogiri.bundle'
If you run into trouble, you can find helpful resources at
https://jekyllrb.com/help/!
To fix this, just execute gem install nokogiri to re-install nokogiri.