Insufficient permissions for forge install --upgrade
I am developing a Custom UI Dashboard Gadget using Forge. In my development, I need to update the manifest.yml of my project frequently. From my understanding, every time the manifest.yml is edited, we need to forge deploy, and then run forge install --upgrade our site. This is where I encounter my problem.
Every time I try to run forge install --upgrade from the command line, I get this error:
I am a site admin for the site I am upgrading and I own the app. Even on the manage apps dashboard, when I try to push the Update button, nothing happens and I get this in the web console:
So far the only workaround I have found is to completely uninstall and reinstall the app to the site every time.
What additional permissions do I need to upgrade a forge app? I can install and deploy just fine, but not upgrade.