Rails server error not clear - ruby-on-rails

Question

Using OS X Sierra
I have a rails app with two parts: front-end and back-end.
On back-end I am using rails 4.
On the front-end I am using Angular.
Whenever I have to start the server locally (for development or test) I use 3 distinct console windows.
one to run grunt watch"
another to run http-server ./build/ -p 8000 -c-1
and the last to run rails server
My local backend repository is just a clone of what is running on production.(minus server configuration)
When I use the fronted connected to my remote server it works without problems. However, when I run the backend locally and try to log in, all I get is the following log, and no responses:
=> Booting WEBrick
=> Rails 4.2.7 application starting in development on http://localhost:3000
=> Run `rails server -h` for more startup options
=> Ctrl-C to shutdown server
[2017-01-02 16:19:21] INFO WEBrick 1.3.1
[2017-01-02 16:19:21] INFO ruby 2.3.3 (2016-11-21) [x86_64-darwin15]
[2017-01-02 16:19:21] INFO WEBrick::HTTPServer#start: pid=10496 port=3000
The front end throws the following error:
XMLHttpRequest cannot load localhost:3000/auth_user?
email=admin#railsapp.com&password=VVVVVVVV. Cross origin requests are
only supported for HTTP.
My Angular endpoint file
angular.module( 'common.config', [] )
.factory('endpoints', function() {
var host = 'development';
if (['live.companysite.com'].indexOf(window.location.host) > -1) {
host = 'production';
} else if (['companysite.com'].indexOf(window.location.host) > -1) {
host = 'development';
} else {
host = 'local';
}
var endpoints = {
'production': {
root: 'http://live.companysite.com/'
},
'development': {
root: 'http://companysite.com/'
},
'local': {
root: 'localhost:3000/'
}
};
return endpoints[host];
});
I know that it should be a CORS problem, but as it works perfectly with two remote servers (production and test) I believe that my local configuration might be the problem.

Answer 1

'localhost:3000auth_user?emai' I think you are missing an '/' before auth_user and after :3000, check the line where you define the api in your angular project, probably you need to add a slash .
Check changing this in your config:
'local': { root: "http:// localhost:3000/" }