ruby on rails - What does this error from Heroku mean and how can I fix it? -

When I try to open an application that I'm working through, I get an application error. I went to my Herakok logs, and got the following error:

"Error H10 (app crash) -> GUT soft- asumarai-8665.Hurupup / DINO = queue = wait = service = condition = 503 bytes = 2012-07-09T17: 39: 09 + 00: 00Heroco [Router]: Error H10 (app crash) -> GUT soft- asumarai-8665.Hurupup / favicon.ico dino = queue = wait = service = Status = 503 bytes = "

I do not know what the error tells or I am about to fix that problem Can extend that error may be great no one can help you!

"Boot process will be present on the web process or web process". There should be extra lines, which gives more details.