The Language Support page introduced in Service Desk 4.11.0 does not load

Issue Description

In Service Desk 4.11.0, we introduced the language support feature described in Providing help in multiple languages.

The page to configure the language support is broken when Service Desk is installed from the page ⚙ > Applications > Versions & Licenses (or by uploading the Service Desk OBR file):

• the name of the page shows as "sd.project.language.support.tab.label" (instead of "Language support")
• when clicking on this page, the page does not load (it spins forever), and the following error is shown:

  sd.lingo.error.unknown
  

Steps to reproduce

1. Install Jira Software (or Jira Core) 8.11.0 by using the installer from this page
2. After Jira 8.11.0 is installed, go to the page ⚙ > Applications > Versions & Licenses
3. Click on "Try it for free" under Service Desk to install it
4. Add a license to Service Desk
5. Create a new Service Desk project
6. Go to the Service Desk Project Setting page

Expected results

• the language support page should be called "Language Support"
• when clicking on it, the page should open

Actual results

• the name of the page shows as "sd.project.language.support.tab.label" (instead of "Language support")
• when clicking on this page, the page does not load (it spins forever), and the following error is shown:

  sd.lingo.error.unknown
  

Workaround

The workaround consists in manually uploading the lingo integration jar file which was missing from the Service Desk OBR file.

The steps are:

1. Download the JAR file from this ticket servicedesk-lingo-integration-plugin-4.11.0-REL-0008.jar
2. Go to ⚙ > Manage Apps > Manage Apps
3. Click on Upload app, and upload the JAR file downloaded from this ticket
4. Go back to the Service Desk project setting page, and you should now be able to see the Language Support page