An unknown exception occured executing Validator com.atlassian.jira.workflow.SkippableValidator
Platform notice: Server and Data Center only. This article only applies to Atlassian products on the Server and Data Center platforms.
Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
While trying to clone an issue with attachments, it might display a workflow exception error about the validator even though the original issue has attachments.
Environment
8.20.6
9.4.7
This issue was not tested on other versions than the above. However, it is most likely this issue is happening way before these versions.
Diagnosis
After trying to clone the issue with attachments, you should along with the Jira UI error, the following error on the logs.
2023-08-01 15:49:55,125+0000 JiraTaskExecutionThread-10 ERROR admin 949x3798x1 if3i00 xxx.xxx.xxx.xxx /secure/CloneIssueDetails.jspa [c.a.j.bc.issue.DefaultIssueService] com.atlassian.jira.workflow.WorkflowException: An unknown exception occured executing Validator com.atlassian.jira.workflow.SkippableValidator@101ee09d: root cause: java.lang.NullPointerException
com.atlassian.jira.exception.CreateException: com.atlassian.jira.workflow.WorkflowException: An unknown exception occured executing Validator com.atlassian.jira.workflow.SkippableValidator@101ee09d: root cause: java.lang.NullPointerException
at com.atlassian.jira.issue.managers.DefaultIssueManager.createIssue(DefaultIssueManager.java:508)
at com.atlassian.jira.issue.managers.DefaultIssueManager.createIssueObject(DefaultIssueManager.java:602)
at com.atlassian.jira.issue.managers.RequestCachingIssueManager.createIssueObject(RequestCachingIssueManager.java:212)
at com.atlassian.jira.bc.issue.CloneIssueCommand.call(CloneIssueCommand.java:133)
at com.atlassian.jira.bc.issue.CloneIssueCommand.call(CloneIssueCommand.java:61)
at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:528)
at com.atlassian.jira.task.TaskManagerImpl$TaskCallableDecorator.call(TaskManagerImpl.java:486)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at com.atlassian.jira.task.ForkedThreadExecutor$ForkedRunnableDecorator.run(ForkedThreadExecutor.java:216)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: com.atlassian.jira.workflow.WorkflowException: An unknown exception occured executing Validator com.atlassian.jira.workflow.SkippableValidator@101ee09d: root cause: java.lang.NullPointerException
at com.atlassian.jira.workflow.OSWorkflowManager.createIssue(OSWorkflowManager.java:773)
at com.atlassian.jira.issue.managers.DefaultIssueManager.createIssue(DefaultIssueManager.java:499)
... 11 more
Caused by: com.opensymphony.workflow.WorkflowException: An unknown exception occured executing Validator com.atlassian.jira.workflow.SkippableValidator@101ee09d: root cause: java.lang.NullPointerException
at com.opensymphony.workflow.AbstractWorkflow.verifyInputs(AbstractWorkflow.java:1477)
at com.opensymphony.workflow.AbstractWorkflow.initialize(AbstractWorkflow.java:606)
at com.atlassian.jira.workflow.OSWorkflowManager.createIssue(OSWorkflowManager.java:754)
... 12 more
Caused by: java.lang.NullPointerException
at com.atlassian.jira.issue.managers.DefaultAttachmentManager.getStoredAttachments(DefaultAttachmentManager.java:193)
at com.atlassian.jira.issue.managers.DefaultAttachmentManager.getAttachments(DefaultAttachmentManager.java:187)
at com.atlassian.jira.issue.AbstractIssue.getAttachments(AbstractIssue.java:71)
at ch.beecom.jira.jsu.workflow.check.fieldsrequired.FieldsRequiredCheck.performCheck(FieldsRequiredCheck.java:101)
at ch.beecom.jira.jsu.workflow.check.AbstractCheck.performCheckAsPreconditionAware(AbstractCheck.java:267)
at com.atlassian.jira.workflow.SkippableValidator.validate(SkippableValidator.java:45)
at com.opensymphony.workflow.AbstractWorkflow.verifyInputs(AbstractWorkflow.java:1466)
Cause
From the log above, we can see the ch.beecom.jira.jsu class, which is related to the Fields Required validator feature from the JSU Automation Suite for Jira Workflows app.
This bug should happen with any 3rd-party app that uses this validator feature. It's known it happens with ScriptRunner too.
This issue happens because the Clone Issue process doesn't load the Attachment Manager class, so it can't load the issue attachments during the process, causing the NPE.
Solution/Workaround
This bug is already tracked under this JRASERVER-76123 - Getting issue details... STATUS ticket.
The workaround for the cloning issue in this scenario is to disable the validator in order to clone the issue.