Why this error is happening when I change an issue to an specific status?

[Rafael Costa]

I put a screen between transition and when I fill the extra fields and click in transition button, this error appears:

Someone could help me to understand why this is happening and how I could solve it?

[Nic Brough -Adaptavist-]

There are several things that might be happening here.

They are all related to the app mentioned (by its class name, not its actual name - ru.andreymarkalov.atlas.plugins.  A bit of digging I wouldn't expect from most people to do can get us to tell you it's Appfire's Power Utilities for Jira workflow )

This app either 

• Needs upgrading
• Has been removed
• Has been misconfigured or misused (possibly by another app!)
• Has a bug

I would want to check the App's status in "manage apps" first, to check the first two, but the third one needs a bit more thought.

Now, the weird bit is the actual error - it's about a search being run, which is not something that normally happens during a transition.  It makes me think you have a validator or post-function that tries a search for some reason.  And that search is malformed or being passed dodgy parameters.  I think we need to see the config of the transition you are executing!

[Radek Dostál]

This sounds like an ancient version of the plugin. SearchResults used to hold List<Issue>; and SearchResults#getIssues() could have been used pre-Jira8

Since Jira8, this was removed in favour of List<T>, and the #getIssues() method effectively changed to #getResults()

https://confluence.atlassian.com/jiracore/lucene-upgrade-975041047.html (search for 'SearchResults'; this is from "Preparing for Jira 8" release notes)

Ergo, the app is very very outdated, and this particular workflow validator/function will not work unless the plugin is updated.