"Oh no! Something went wrong" will be shown on cluster setting page after user choose 'custom update service' in 'upstream configuration' 

4.13.0-ec.1

Always on multi-cluster
Ocassionlly on the normal cluster (disabled multi-cluster)

1. Login OCP, navigate to cluster setting page
2. Click the edit button of "Upstream configuration", choose 'custom update server' and then click the save button
3. Check if the Cluster Setting page can be loaded normally

'Oh no! Something went wrong.' will be shown on page with below error details. (Attachmenet for more details)
  TypeErrorDescription:Cannot read properties of null (reading 'major')

The error should not shown