unifi error: Service killed by signal 11 - Solved Ubuntu 17.04

There are a couple of things you need to do in order to get the Unifi controller working on Ubuntu 17.04:

1. Change the init file to contain the correct path to Java

You can follow the instructions in this post

2. Change the memory allocation for the Unifi controlle

Simply run the following command in the terminal:

echo "JSVC_EXTRA_OPTS=\"\$JSVC_EXTRA_OPTS -Xss1280k\"" | sudo tee -a /etc/default/unifi