Heroku code=H10 desc=“App crashed” - Can't figure out why it's crashing

Question

I\'ve been searching around on this one for a while and can\'t find anything that seems to be applicable in my situation. I\'ve been staring at these logs and I can\'t see w

Answer 1

I had the main entry in package.json pointing at the wrong directory. Ensure it is pointed to the build output directory. As for my case, I had the server file in the /bin folder so I set my package.json

{
  "main": "build/bin/www.js"
  "scripts": {
    "start": "node ."
  }
}

Answer 2

To create a heroku account

 $heroku create

To verify your git configration is well

$git remote -v

Associate a Git repo with an existing application

$heroku git:remote -a herokuapp-name

To perform push to master

$git push heroku master

To get your database to work you will have to migrate to production database

$heroku run bundle exec rake db:migrate

Then restart

heroku restart

finaly browse to your location

Answer 3

I have also faced this error, overall this error means that It can't work with your dependencies and one of the reason may be old versions of dependencies. I solved this by following two steps: 1) I updated all my dependencies manually. 2) I changed my Flask API from app.py to err.py (could be helpful to have different name, but not necessary.

This worked for me. Hope, it helps!!

Answer 4

In my case it was because I was hardcoding the port to be used,

I changed using this, and it worked

app.listen(process.env.PORT || 3000);

Answer 5

Try following steps:

- git push heroku master # if not done
- heroku run rake db:migrate
- heroku restart

Wait couple of minutes...

Answer 6

In my case, I was working with express on ES6 using babel, the babel was imported as devDependency (Heroku ignores devDependencies in production) after including them into dependencies it worked for me.

"dependencies": {
    "@babel/register": "^7.8.3",
    "@babel/core": "^7.8.4",
    "@babel/preset-env": "^7.8.4"
}