Has anyone any fix for the below please this has cropped up ever since we completed the upgrade to v7.3.6 in production and it's casuing isuses. This issue is happening for everyone on Jira not just me.
This error comes up when anyone tclicks the "Start Progress" and /or the "Withdraw" buttons in an issue.
Technical details
Log's referral number: 462f5cd1-e90c-4a2e-9c5d-d9e3c7e9618f
Cause
Referer URL: http://svwcd-jiraap01:8080/browse/BAU000-854
java.lang.NoSuchMethodError: com.atlassian.jira.issue.MutableIssue.setAssignee(Lcom/atlassian/crowd/embedded/api/User;)V
java.lang.NoSuchMethodError: com.atlassian.jira.issue.MutableIssue.setAssignee(Lcom/atlassian/crowd/embedded/api/User;)V
at com.googlecode.jsu.util.WorkflowUtils.setFieldValue(WorkflowUtils.java:669) [?:?]
at com.googlecode.jsu.util.WorkflowUtils.setFieldValue(WorkflowUtils.java:958)