heroku - Item could not be updated:

Question

I'm trying to add / modify Config Var, when I try to save the change I get a message:

Item could not be updated:

Unknown Error. Please contact support.

Any ideas on what may be wrong?

Answer 1

The below command solved my issue. Hope it works for others too.

Using Heroku CLI:

heroku config:set DB_PASSWORD=secret -a [heroku-app-name]

Bonus Points:

If Heroku CLI is not installed, you could use NPM to install it easily in [windows] system.

npm install -g heroku

heroku login