Thanks for getting in touch. That looks like a BadRequest error coming back from Octopus server, which is curious because in all the scenarios I can see in the code it should be returning a more meaningful error message to display. Could you check the Network tab in the browser Developer Tools and look at the full details of the response from the server, to see if there are more details there that we aren’t surfacing for some reason?
Also, are there any proxies/firewalls or anything Octopus has to go out through to get to Jira? There is a known issue with proxy configuration not being applied correctly.