Was able to view the rails start page after 'rails server', but unable to now on cloud9 -

i've tried search answer question couldn't find it. apologies if has been answered already.

so i've been doing ruby on rails course udemy, , after create application, decided start beginning , recreating application.

lol, got stuck right @ step 1 :(

so went cloud9, went terminal rails projects , created new rails project

rails new myapp 

afterwards, went cd myapp, ran rails server

i noticed before, webbrick, says puma

also, this:

=> booting puma => rails 5.1.4 application starting in development  => run ' rails server -h ' more startup options puma starting in single mode... * version 3.10.0 (ruby 2.4.1-p111), codename: russell's teapot * min threads: 5, max threads: 5 * environment: development * listening on tcp://localhost:8080 use ctrl-c stop 

usually, @ end of 2nd line, there in development http://localhost:3000 i'm not getting @ now.

i can't go page see default rails page. i've tried manually entering in no luck.

so i'm wondering, there i've done change things?

i've tried multiple things.

rails s -p $port -b $ip', 'killall ruby,
creating new workspace

sadly none of these or other solutions have worked. it's annoyed me able see rails page made before now, nothing happens/just can't find rails page.

(the course did installed heroku , github credentials. i'm on new workspace in cloud9).

just wondering if there else can try?

thanks