I have installed Parse Server directly from Heroku and mLab button and then Deploy to Heroku Button.
This is working fine, but now I need to set up email verification. I have installed Mailgun and Mailgun Email Verification addons directly from Heroku. Under Config vars
the correct keys are all there, but I get the error
An appName, publicServerURL, and emailAdapter are required for password reset and email verification functionality. (Code: 1, Version: 1.17.2)
I was under the impression that when installing addons directly from Heroku, the settings was deployed automatically. Do I need to configure anything else after installing?