What version are you running?
2.5.9
What's the URL of the page containing the problem?

What steps will reproduce the problem?

Upload a diffset and publish it
Upload a second diffset and let it be draft
Go to diff view and before all the hunks are loaded try diff between 1 & 2


What is the expected output? What do you see instead?
Diff view should show interdiff between 1 & 2 instead I see an error as shown in the attachement
What operating system are you using? What browser?
Centos Linux 7 (core) based docker container. Chrome browser
Please provide any additional information below.
Work around for this is just refresh the page or wair for all the