I recently upgraded from Ubuntu 16.10 to 17.04. In Ubuntu 16.10, I could setup a WiFi hot-spot to give Internet access to my Android phone using the trick mentioned in this article Share internet with Android Ubuntu 14.04. I can connect to WiFi now using the fix mentioned in answer to this question: Can't connect to wifi on Ubuntu 17.04.
But when I click on "Connect to Hidden WiFi Network" and choose to start the hot-spot setup, I see this notification and it doesn't start.
How should I resolve this?