Node.js app not deploying correctly on Heroku

Question

My repository: https://github.com/jacklemasters/tech-blog

The app works locally on my machine, but I cannot seem to figure out why it will not work on Heroku. I have attempted completely moving the code, a new repository, nothing seems to help.

Here are the error logs I am receiving from Heroku: 2021-10-04T14:32:52.833339+00:00 app[web.1]: npm ERR! [email protected] start: node server.js 2021-10-04T14:32:52.833414+00:00 app[web.1]: npm ERR! Exit status 1 2021-10-04T14:32:52.833484+00:00 app[web.1]: npm ERR! 2021-10-04T14:32:52.833533+00:00 app[web.1]: npm ERR! Failed at the [email protected] start script. 2021-10-04T14:32:52.833601+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above. 2021-10-04T14:32:52.847732+00:00 app[web.1]: 2021-10-04T14:32:52.847831+00:00 app[web.1]: npm ERR! A complete log of this run can be found in: 2021-10-04T14:32:52.847916+00:00 app[web.1]: npm ERR! /app/.npm/_logs/2021-10-04T14_32_52_834Z-debug.log 2021-10-04T14:32:53.006395+00:00 heroku[web.1]: Process exited with status 1 2021-10-04T14:32:53.089213+00:00 heroku[web.1]: State changed from starting to crashed

edit: I understand it could be something with my packages, but on my side I see them as installed. Still at a loss!

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– Marc, Commented Oct 4, 2021 at 17:13

Jose Ramon Martinez Riveiro · Accepted Answer · 2021-10-04 17:58:58Z

1

You are using libraries that you didn't import into the package.json with npm.

Example: npm install express-session

Other thing that is wrong is to upload the .dotenv file to GitHub. Use the .gitignore to avoid it and configure the heroku envorinment variables. See more here: https://devcenter.heroku.com/articles/config-vars

edited Oct 4, 2021 at 17:58

answered Oct 4, 2021 at 17:30

Jose Ramon Martinez Riveiro

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4 Comments

Jack Over a year ago

this would make sense considering I kept moving the files and reinstalling. Is there a difference between just writing npm install express-session with and without the --save? I only ask because I had never seen that before. I will be home to try this in a few hours and let you know if it worked. Thank you so much for the answer.

Jose Ramon Martinez Riveiro Over a year ago

Your welcome. Try to reinstall all your packages using npm and make sure that they are imported into the package.json. About the --save, your are right, is no longer needed afer npm version 5.0.0. It was needed to inject the module into the package in the past.

Jack Over a year ago

I finally had the attempt to try this, and still getting the same error. Is there something I am missing? I see the dependencies on my package.json.. Tried installing them once again anyways, still running into the same issue!

Jack Over a year ago

Should have added.. Here are new errors. imgur.com/a/mj2tMuA

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