sinatra - Heroku: Force Error Backtrace To Display In Development Mode -


i running sinatra application on heroku, , i'm seeing generic error page:

heroku generic error

stuff i've tried far

  1. heroku logs returns generic "h10 - application crashed" error, doesn't tell me actual cause is.

  2. i've used heroku config vars set rack_env=development , verified set way using heroku config. thought force backtrace displayed on screen not.

questions

  1. how can force backtrace displayed in dev mode?
  2. what else can track down source of error?

i got response heroku support this.

everything did correct, problem application boot errors won't display screen, , boot error. source of error further in backtrace in heroku logs, in fact right place in case, missed it.

setting rack_env=development correct way display application runtime errors screen, according support.


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