'Could not find the alias' error after installing drush alias for Pantheon
If you already have terminus installed, you can use terminus drush instead of your local drush.

The advantage of terminus drush is that it already has everything you need to work with Pantheon.

The disadvantage is that you will have to do some work to set it up with your local dev environment; for that, I would just use your local drush.

So, the workflow looks like this:


Do I need to call a drush command on Pantheon? terminus drush
Do I need to call a drush command on my local dev server? drush