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Editorial Team
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Asked: 2026-06-07T06:42:29+00:00

When I try to open an application I’m working on through heroku, I get

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When I try to open an application I’m working on through heroku, I get an application error. I went into my heroku logs, and found the following error:

“Error H10 (App crashed) -> GET gentle-samurai-8665.herokuapp.com/ dyno= queue= wait= service= status=503 bytes=
2012-07-09T17:39:09+00:00 heroku[router]: Error H10 (App crashed) -> GET gentle-samurai-8665.herokuapp.com/favicon.ico dyno= queue= wait= service= status=503 bytes=”

I’m not sure what the error refers to or how I can go about fixing the problem that causes the error. Any help you can give would be great!

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1 Answer

  1. Editorial Team

    Heroku has a complete list of all its error codes. “A crashed web process or a boot timeout on the web process will present” an H10 error. There should be additional lines in your logs from your application that give more details.

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