I have a locally developed Rails application. It is very simple, with no database but only a controller that accesses Facebook data and renders them in view. By the way, gem RestGraph is used.
Before I push this application to heroku, I used foreman start to test it. Since I was using WEBrick before I need to install 'thin' gem and create a Procfile which reads:
web: bundle exec thin start -R config.ru -e $RACK_ENV -p $PORT
an '.env' file seems also required, which reads:
RACK_ENV=development
PORT=3000
The 'config.ru' file is generate by rails, which reads:
require ::File.expand_path('../config/environment', __FILE__)
run Myapp::Application
Now I entered 'foreman start', but all I get is one line:
15:33:18 web.1 | started with pid 27143
The server will not boot. And if I force terminate it, the error is:
/usr/local/foreman/lib/foreman/engine.rb:141: [BUG] rb_sys_fail() - errno == 0
Which is not very helpful.