出ました。
謎すぎました。
:
:
1: from /home/ec2-user/Hachiss_/shared/bundle/ruby/2.5.0/gems/bootsnap-1.4.8/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/home/ec2-user/Hachiss_/shared/bundle/ruby/2.5.0/gems/bootsnap-1.4.8/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require': Could not load the 'listen' gem. Add `gem 'listen'` to the development group of your Gemfile (LoadError)対処法は、
「config/environments/development.rb」ファイルの
「config.file_watcher = ActiveSupport::EventedFileUpdateChecker」という行をコメントアウトすれば解消されます！
# Use an evented file watcher to asynchronously detect changes in source code,
# routes, locales, etc. This feature depends on the listen gem.
config.file_watcher = ActiveSupport::EventedFileUpdateCheckerこれを、
「#」つけてコメントアウト！
# Use an evented file watcher to asynchronously detect changes in source code,
# routes, locales, etc. This feature depends on the listen gem.
# config.file_watcher = ActiveSupport::EventedFileUpdateCheckerこれでOKです！
