rails serverが起動しないことについて

Ruby on Railsについてrails serverを実行するとNo application seems to be running here!が表示され、ネットで調べたのですが、解決しないのでご教授をお願い致します。

【環境】
Cloud9

また、ails server -b $IP -p $PORTを実行しましたが、以下が表示され、上手くいきませんでした。
-b ：IPアドレス指定
-p：bポート番号指定
【エラー内容】
handle_argument_error': ERROR: "rails server" was called with arguments ["0.0.0.0", "80", "8080"] (Thor::InvocationError) Usage: "rails server [puma, thin etc] [options]" from /usr/local/rvm/gems/ruby-2.4.0/gems/thor-0.20.0/lib/thor/command.rb:34:in rescue in run'
from /usr/local/rvm/gems/ruby-2.4.0/gems/thor-0.20.0/lib/thor/command.rb:21:in run' from /usr/local/rvm/gems/ruby-2.4.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in invoke_command'
from /usr/local/rvm/gems/ruby-2.4.0/gems/thor-0.20.0/lib/thor.rb:387:in dispatch' from /usr/local/rvm/gems/ruby-2.4.0/gems/railties-5.1.4/lib/rails/command/base.rb:63:in perform'
from /usr/local/rvm/gems/ruby-2.4.0/gems/railties-5.1.4/lib/rails/command.rb:44:in invoke' from /usr/local/rvm/gems/ruby-2.4.0/gems/railties-5.1.4/lib/rails/commands.rb:16:in <top (required)>'
from /home/ubuntu/workspace/environment/hello_app/bin/rails:9:in require' from /home/ubuntu/workspace/environment/hello_app/bin/rails:9:in <top (required)>'
from /usr/local/rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in load' from /usr/local/rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in call'
from /usr/local/rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in call' from /usr/local/rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/client.rb:30:in run'
from /usr/local/rvm/gems/ruby-2.4.0/gems/spring-2.0.2/bin/spring:49:in <top (required)>' from /usr/local/rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in load'
from /usr/local/rvm/gems/ruby-2.4.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in <top (required)>' from /home/ubuntu/workspace/environment/hello_app/bin/spring:15:in require'
from /home/ubuntu/workspace/environment/hello_app/bin/spring:15:in <top (required)>' from bin/rails:3:in load'
from bin/rails:3:in `<main>'