The change of the priority scheme fails.
2019-06-12 08:19:12,569 http-nio-8080-exec-21 ERROR [c.a.j.web.servlet.InternalServerErrorServlet] {errorId=e65e434d-6ebd-4a08-8db3-5ddb40c2843d, interpretedMsg=, cause=java.lang.NoSuchMethodError: com.atlassian.jira.issue.fields.config.manager.PrioritySchemeManager.assignProjects(Lcom/atlassian/jira/issue/fields/config/FieldConfigScheme;Ljava/util/Set;)V, stacktrace=java.lang.NoSuchMethodError: com.atlassian.jira.issue.fields.config.manager.PrioritySchemeManager.assignProjects(Lcom/atlassian/jira/issue/fields/config/FieldConfigScheme;Ljava/util/Set;)V
at com.atlassian.jira.issue.fields.config.DefaultPrioritySchemeService.assignProjects(DefaultPrioritySchemeService.java:98) [classes/:?]
at com.atlassian.jira.web.action.admin.priorities.AssociatePriorityScheme.run(AssociatePriorityScheme.java:128) [classes/:?]
at com.atlassian.jira.web.action.admin.priorities.AssociatePriorityScheme.doExecute(AssociatePriorityScheme.java:91) [classes/:?]
....