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Can't run Node.js app on Heroku


Can't run Node.js app on Heroku

By : Hugo Teixeira
Date : November 22 2020, 10:31 AM
I think the issue was by ths following , I have created small app which is using Node.js on backend and Angular.js. Locally it's working fine without error. When I deployed it to Heroku I have get these from logs: , You need to start listening on the Express app:
code :
app.listen(process.env.PORT);


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heroku for node: ! Heroku push rejected, no Cedar-supported app detected

heroku for node: ! Heroku push rejected, no Cedar-supported app detected


By : Ashley Clifton
Date : March 29 2020, 07:55 AM
hope this fix your issue did you read the Getting Started with Node.js on Heroku article on Heroku Dev Center?
You need to declare your process type with Procfile. To do so, create a file named Procfile, with the following content:
code :
web: node web.js
Trying to connect my node.js to Heroku PostgreSQL database. Following Heroku Postgres tutorial

Trying to connect my node.js to Heroku PostgreSQL database. Following Heroku Postgres tutorial


By : Robbie
Date : March 29 2020, 07:55 AM
may help you . It's Heroku's problem. The "process.env.DATABASE_URL" variable they tell you to use in pg.connect is not functioning.
A simple
code :
console.log(process.env.DATABASE_URL);
var connectionString = "postgres://*USERNAME*:*PASSWORD*@*HOST*:*PORT*/*DATABASE*"

pg.connect(connectionString, function(err, client, done) {
   client.query('SELECT * FROM your_table', function(err, result) {
      done();
      if(err) return console.error(err);
      console.log(result.rows);
   });
});
Node.js Heroku app crashes with Error R10 (Boot timeout) `heroku restart` not working

Node.js Heroku app crashes with Error R10 (Boot timeout) `heroku restart` not working


By : Karan Mandal
Date : March 29 2020, 07:55 AM
it fixes the issue I'm not completely sure what happened, but it looked like Heroku was not restarting when I pushed new code or ran heroku restart. I created a new app with the same code and it works.
One difference someone else might want to test is that I removed node_packages from my git repo before pushing to the new app.
Heroku Node.js (express.js) App Works Locally but failed on heroku when using MongoDB

Heroku Node.js (express.js) App Works Locally but failed on heroku when using MongoDB


By : Abhishek Dhyani
Date : March 29 2020, 07:55 AM
will be helpful for those in need As far as I can see, the error message that you receive does not contain the string that you write to console is case of connections failure: console.log ('ERROR connecting to: ' + dbURI + '. ' + err); So my best guess is that the error you receive originates from another attempt to connect to the same or another database.
Heroku / Node / React - how to access my node api endpoints on heroku

Heroku / Node / React - how to access my node api endpoints on heroku


By : Saurabh
Date : March 29 2020, 07:55 AM
hope this fix your issue So there are two problems that are probably working in tandem to cause you this headache.
The first and more likely issue is that react-router is intercepting the "/api" urls and deciding prematurely that it doesn't have any components to show for those. A way to fix this is to edit the "proxy" property in your client code's package.json.
code :
"proxy": {
  "/api": {
    "target": "http://localhost:5000"
  }
}
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