Not able to log in to Heroku account from command line

I am using codio.com. From there I am using the Ubuntu terminal to log into Heroku but it's giving me the below error. I have read the help page also. It says with MFA you have to use browser for login. But the issue is, browser is not opening from Codio platform. I am stuck at this point. Please help.

codio@actor-spoon:~/workspace/helloSaas$ heroku login -i                 
heroku: Enter your login credentials
Email: prashantexploring@gmail.com
Password: ********
 ›   Error: Your account has MFA enabled; API requests using basic 
 ›   authentication with email and password are not supported. Please 
 ›   generate an authorization token for API access. 
 ›
 ›   Error ID: vaas_enrolled

Working :) : Just paste API key in place of password.

codio@magic-savage:~/workspace/rottenpotatoes$ heroku login -i
 ›   Warning: heroku update available from 7.45.0 to 7.59.2.
heroku: Enter your login credentials
Email: prashantexploring@gmail.com
Password: ************************************
Logged in as prashantexploring@gmail.com
codio@magic-savage:~/workspace/rottenpotatoes$ 

you can use the "API Key" as the password.