I want to install Jira Service Desk into existing Jira Software server. I did this on my DEV server from the Application tab but am unable to create a project, I get error message JIRA Service Desk, unable to create IT Service Desk projects with Nullpointer exception. My Jira version is 7.12.1. I find a bit of information about this but have not resolved it yet. So I was going to try again in my QA server to see if the installation was wrong. So my question is, do I need to install Service Desk using the installer file (on Linux) and not do it through the web interface?