git, Heroku: pre-receive hook declined

Question

I am in the process of setting up a git repository and attempting to link it to Heroku. When I run the command

git push heroku master

I rec

Answer 1

Came across this same error when deploying a node app, but resolved with these two steps and thought I'd share in case anyone else runs into the same issues.

1. Make sure you aren't committing node_modules since heroku installs dependencies from package.json on push. Try adding node_modules/ to your .gitignore to ensure you don't accidentally commit it
2. Heroku uses Node v12 which node-sass 4.10.0 will fail to build with. Try increasing node-sass version by adding the following. This allowed it to build successfully for me:

  "devDependencies": {
    "node-sass": "^4.12.0"
  }