I added the `http://` http://` to the developer's url and it's fine! About Development Environment - yeah, it's displaying error messages instead of error page

I added the `http://` http://` to the developer's url and it's fine! About Development Environment - yeah, it's displaying error messages instead of error page. I'm using Capistrano for deployment! May be I had previously enabled error reporting during testing and forgot to turn it off in production environment. I'm checking into that.