Exception when clicking on cancel in AB Testing Configuration

Found in

EPiServer.Marketing.Testing 2.5.5

Fixed in

EPiServer.Marketing.Testing 2.5.6

(Or a related package)

Created

Feb 25, 2019

Updated

Feb 26, 2019

State

Closed, Fixed and tested

Description

Steps to reproduce:
1. Create a CMS site with package AB test 2.5.6-pre-00486
2. Open Admin > Config > AB Testing Configuration
3. Click Cancel button
=> a null exception is returned