Can't heroku run rake db migrate through my app

Question

it is my first time to encounter such error(s):

Running `rake db:migrate` attached to terminal... up, run.8524
 !    Heroku client internal error.
 !    Sear         


        

Answer 1

Try to run it in the "background"

 heroku run:detached rake db:migrate

You can also try heroku troubleshooting, as it appears to be a connection problem.

heroku run rails console
telnet rendezvous.runtime.heroku.com 5000

If it doesn't work, you probably have a firewall blocking your connection to heroku.