Heroku missing required flag: -a,

Question

I am currently doing a project and I am having issues with heroku.

Here is the mistake that always pops up when I try to use a heroku command.

Error in question

For those of you who have had the same error, what is the possible cause for this?

Thanks in advance!

Answer 1

• Initialise with git: git init

• Get the app name: heroku apps

• Add remote:

heroku git:remote -a your_app_name

Edit: You can also run commands without permanently adding the app

heroku run -a your_app_name

Answer 2

The error is for missing app name. You must provide your app name that you want to run. Your command should be like below:

heroku run -a YOUR_APP_NAME_HERE

or

heroku run --app YOUR_APP_NAME_HERE

Answer 3

When you create a Heroku app with

heroku create my-app

you need to provide the flag (-a, --app) to the add-on installation

heroku addons:create heroku-postgresql:hobby-dev --app my-app

Answer 4

whenever you run some commands for effecting your heroku application, you need to set git remote to your application to work, use that by,

heroku git:remote -a your_app_name