ubuntu - When running "rails server" why does my localhost refuse to connect on both Chrome and Firefox?

Question

I'm trying to see my Ruby on Rails app on my localhost, when I run rails server it looks like it is running good with no errors but when I open up my localhost at http://localhost:3000/ it redirects me to https://localhost:8080/ and says refuses to connect. I am able to open my localhost files with no problems but when I run rails server and open localhost with the port it redirects me to https instead of http no matter what I do. I even tried running with different ports. I am on Ubuntu and my app is using Puma.

I have done the following so far:

• Cleared all my cache & history
• Opened incognito window
• Ran rails server with different ports
• Changed some about:config settings to false in firefox
• Have searched localhost in 'chrome://net-internals/#hstsand' but says not found
• I've tried the other solutions on this link: Google Chrome redirecting localhost to https

None have worked at all. What could the problem be?

I get this error on Chrome

And this error on Firefox

Any advice on this helps! Thanks.

EDIT: Let me know if this needs to be changed, this is how I have my etc/host/ set up

Answer 1

After scrolling through posts and much research my issue was that I did not run yarn before running rails server. I found this post and referred to this answer https://stackoverflow.com/a/58369306/14365156

But I did not follow those steps exactly, I only ran yarn then ran rails server and now am finally able to view http://localhost:3000/. Hopefully this helps others!