railsでサーバーがうまく立ち上がりません。

前提・実現したいこと

railsでサーバーを立ち上げようとしたところ、エラーが出てきて、立ち上げることが出来ません。

発生している問題・エラーメッセージ

何が原因なのかわかりません。すみません。

該当のソースコード

rails new HelloRails
       exist
   省略～～～～
Don't run Bundler as root. Bundler can ask for sudo if it is needed, and installing your
bundle as root will break this application for all non-root users on this machine.
The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
Using rake 12.3.2
Using concurrent-ruby 1.1.5
Using i18n 1.6.0
Using minitest 5.11.3
Using thread_safe 0.3.6
Using tzinfo 1.2.5
Using activesupport 5.2.3
Using builder 3.2.3
Using erubi 1.8.0
Using mini_portile2 2.4.0
Using nokogiri 1.10.3
Using rails-dom-testing 2.0.3
Using crass 1.0.4
Using loofah 2.2.3
Using rails-html-sanitizer 1.0.4
Using actionview 5.2.3
Using rack 2.0.7
Using rack-test 1.1.0
Using actionpack 5.2.3
Using nio4r 2.3.1
Using websocket-extensions 0.1.4
Using websocket-driver 0.7.1
Using actioncable 5.2.3
Using globalid 0.4.2
Using activejob 5.2.3
Using mini_mime 1.0.1
Using mail 2.7.1
Using actionmailer 5.2.3
Using activemodel 5.2.3
Using arel 9.0.0
Using activerecord 5.2.3
Using mimemagic 0.3.3
Using marcel 0.3.3
Using activestorage 5.2.3
Using public_suffix 3.1.0
Using addressable 2.6.0
Using io-like 0.3.0
Using archive-zip 0.12.0
Using bindex 0.7.0
Using msgpack 1.2.10
Using bootsnap 1.4.4
Using bundler 2.0.2
Using byebug 11.0.1
Using regexp_parser 1.5.1
Using xpath 3.2.0
Using capybara 3.24.0
Using childprocess 1.0.1
Using chromedriver-helper 2.1.1
Using coffee-script-source 1.12.2
Using execjs 2.7.0
Using coffee-script 2.4.1
Using method_source 0.9.2
Using thor 0.20.3
Using railties 5.2.3
Using coffee-rails 4.2.2
Using ffi 1.11.1
Using jbuilder 2.9.1
Using rb-fsevent 0.10.3
Using rb-inotify 0.10.0
Using ruby_dep 1.5.0
Using listen 3.1.5
Using puma 3.12.1
Using sprockets 3.7.2
Using sprockets-rails 3.2.1
Using rails 5.2.3
Using rubyzip 1.2.3
Using sass-listen 4.0.0
Using sass 3.7.4
Using tilt 2.0.9
Using sass-rails 5.0.7
Using selenium-webdriver 3.142.3
Using spring 2.1.0
Using spring-watcher-listen 2.0.1
Using sqlite3 1.4.1
Using turbolinks-source 5.2.0
Using turbolinks 5.2.0
Using uglifier 4.1.20
Using web-console 3.7.0
Bundle complete! 18 Gemfile dependencies, 78 gems now installed.
Use `bundle info [gemname]` to see where a bundled gem is installed.
         run  bundle exec spring binstub --all
* bin/rake: Spring inserted
* bin/rails: Spring inserted
~/HelloRails# rails
/root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/railties-5.2.3/lib/rails/app_loader.rb:53: warning: Insecure world writable dir /root/.rbenv/versions in PATH, mode 040777
The most common rails commands are:
 generate     Generate new code (short-cut alias: "g")
 console      Start the Rails console (short-cut alias: "c")
 server       Start the Rails server (short-cut alias: "s")
 test         Run tests except system tests (short-cut alias: "t")
 test:system  Run system tests
 dbconsole    Start a console for the database specified in config/database.yml
              (short-cut alias: "db")

 new          Create a new Rails application. "rails new my_app" creates a
              new application called MyApp in "./my_app"


All commands can be run with -h (or --help) for more information.
In addition to those commands, there are:

Traceback (most recent call last):
        70: from bin/rails:3:in `<main>'
        69: from bin/rails:3:in `load'
        68: from /root/HelloRails/bin/spring:15:in `<top (required)>'
        67: from /root/.rbenv/versions/2.6.1/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        66: from /root/.rbenv/versions/2.6.1/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
        65: from /root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `<top (required)>'
        64: from /root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load'
        63: from /root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/spring-2.1.0/bin/spring:49:in `<top (required)>'
        62: from /root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/spring-2.1.0/lib/spring/client.rb:30:in `run'
        61: from /root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call'
        省略～～～～
require_with_bootsnap_lfi'
         3: from /root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
         2: from /root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/execjs-2.7.0/lib/execjs.rb:4:in `<main>'
         1: from /root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/execjs-2.7.0/lib/execjs.rb:5:in `<module:ExecJS>'
/root/.rbenv/versions/2.6.1/lib/ruby/gems/2.6.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:58:in `autodetect': Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)