ruby - Out of the blue I can't start Rails server with rails -s

Question

Last night I installed ruby 3.0.0 and ruby on rails 6.1.1 on my Ubuntu system by following the instructions at this link http://railsapps.github.io/installrubyonrails-ubuntu.html and I was able to get rails running in my browser on port 3000 using command rails -s. Today I try to get it running again and I get this rails aborted error. I'm completely confounded by this issue as I did not change any settings from last night when it was working perfectly fine. I've seen other questions asked with similar issues but not with my specific error so I'm not sure how to proceed. I tried creating a separate directory and creating a new gemset for a separate project and I get the same error. Anyone have any ideas?

rails aborted!
LoadError: cannot load such file -- rexml/document
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:89:in `register'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:44:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/selenium-webdriver-3.142.7/lib/selenium/webdriver/firefox.rb:22:in `<main>'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/webdrivers-4.5.0/lib/webdrivers/geckodriver.rb:72:in `<main>'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/webdrivers-4.5.0/lib/webdrivers.rb:4:in `<main>'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
/home/who/workspace/proj/config/application.rb:7:in `<main>'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:53:in `require_relative'
/home/who/workspace/proj/Rakefile:4:in `<main>'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:59:in `load'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:59:in `load'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:326:in `block in load'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:326:in `load'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/railties-6.1.1/lib/rails/commands/rake/rake_command.rb:20:in `block in perform'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/railties-6.1.1/lib/rails/commands/rake/rake_command.rb:18:in `perform'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/railties-6.1.1/lib/rails/command.rb:52:in `invoke'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/railties-6.1.1/lib/rails/commands.rb:18:in `<main>'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/bootsnap-1.6.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
/home/who/workspace/proj/bin/rails:5:in `<top (required)>'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/spring-2.1.1/lib/spring/client/rails.rb:28:in `load'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/spring-2.1.1/lib/spring/client/rails.rb:28:in `call'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/spring-2.1.1/lib/spring/client/command.rb:7:in `call'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/spring-2.1.1/lib/spring/client.rb:30:in `run'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/spring-2.1.1/bin/spring:49:in `<top (required)>'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `load'
/home/who/.rvm/gems/ruby-3.0.0@proj/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `<top (required)>'
<internal:/home/who/.rvm/rubies/ruby-3.0.0/lib/ruby/3.0.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
<internal:/home/who/.rvm/rubies/ruby-3.0.0/lib/ruby/3.0.0/rubygems/core_ext/kernel_require.rb>:85:in `require'
/home/who/workspace/proj/bin/spring:10:in `block in <top (required)>'
<internal:kernel>:90:in `tap'
/home/who/workspace/proj/bin/spring:7:in `<top (required)>'
bin/rails:2:in `load'
bin/rails:2:in `<main>'
(See full trace by running task with --trace)

question from:https://stackoverflow.com/questions/65939107/out-of-the-blue-i-cant-start-rails-server-with-rails-s

Answer 1

Waitting for answers