Hey! tengo este error al hacer rails server, solucionado!

 gems are installed into `./vendor/bundle`
gonzuwu@MacBook-Air-de-Gonzalo ux % rails server
Traceback (most recent call last):
        25: from bin/rails:4:in `<main>'
        24: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
        23: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
        22: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8/lib/rails/commands.rb:18:in `<main>'
        21: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8/lib/rails/command.rb:46:in `invoke'
        20: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8/lib/rails/command/base.rb:69:in `perform'
        19: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/thor-1.2.1/lib/thor.rb:392:in `dispatch'
        18: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/thor-1.2.1/lib/thor/invocation.rb:127:in `invoke_command'
        17: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/thor-1.2.1/lib/thor/command.rb:27:in `run'
        16: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8/lib/rails/commands/server/server_command.rb:142:in `perform'
        15: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8/lib/rails/commands/server/server_command.rb:142:in `tap'
        14: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/railties-5.2.8/lib/rails/commands/server/server_command.rb:145:in `block in perform'
        13: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
        12: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
        11: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/config/application.rb:7:in `<main>'
        10: from /Users/gonzuwu/.rvm/rubies/ruby-2.7.5/lib/ruby/2.7.0/bundler.rb:174:in `require'
         9: from /Users/gonzuwu/.rvm/rubies/ruby-2.7.5/lib/ruby/2.7.0/bundler/runtime.rb:58:in `require'
         8: from /Users/gonzuwu/.rvm/rubies/ruby-2.7.5/lib/ruby/2.7.0/bundler/runtime.rb:58:in `each'
         7: from /Users/gonzuwu/.rvm/rubies/ruby-2.7.5/lib/ruby/2.7.0/bundler/runtime.rb:69:in `block in require'
         6: from /Users/gonzuwu/.rvm/rubies/ruby-2.7.5/lib/ruby/2.7.0/bundler/runtime.rb:69:in `each'
         5: from /Users/gonzuwu/.rvm/rubies/ruby-2.7.5/lib/ruby/2.7.0/bundler/runtime.rb:74:in `block (2 levels) in require'
         4: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
         3: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:32:in `require'
         2: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/mysql2-0.5.3/lib/mysql2.rb:36:in `<main>'
         1: from /Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:17:in `require'
/Users/gonzuwu/Documents/LeadingDev/skade/ux/vendor/bundle/ruby/2.7.0/gems/bootsnap-1.16.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:17:in `require': cannot load such file -- mysql2/mysql2 (LoadError)
gonzuwu@MacBook-Air-de-Gonzalo ux %