java.lang.NullPointerException: This exception has no message.

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Deleting an Issue Type can result in a NullPointerException when attempting to perform a number of actions within JIRA

This exception has no message.

Deleting an Issue Type can result in a NullPointerException when attempting to perform a number of actions within JIRA

This exception has no message.

java.lang.NullPointerException: 	at com.atlassian.jira.issue.fields.option.IssueConstantOption.getId(IssueConstantOption.java:48)	at com.atlassian.jira.issue.fields.config.manager.IssueTypeSchemeManagerImpl.getIssueTypesForConfigScheme(IssueTypeSchemeManagerImpl.java:299)	at com.atlassian.jira.issue.fields.config.manager.IssueTypeSchemeManagerImpl.getIssueTypesForProject(IssueTypeSchemeManagerImpl.java:263)	at com.atlassian.jira.issue.fields.config.manager.IssueTypeSchemeManagerImpl.getIssueTypesForProject(IssueTypeSchemeManagerImpl.java:268)	at com.atlassian.jira.jql.context.FieldConfigSchemeClauseContextUtil.addProjectIssueTypeContextsForProjects(FieldConfigSchemeClauseContextUtil.java:261)	at com.atlassian.jira.jql.context.FieldConfigSchemeClauseContextUtil.getContextForConfigScheme(FieldConfigSchemeClauseContextUtil.java:147)	at com.atlassian.jira.jql.permission.CustomFieldClausePermissionChecker.hasPermissionToUseClause(CustomFieldClausePermissionChecker.java:54)	at com.atlassian.jira.jql.permission.DefaultClausePermissionHandler.hasPermissionToUseClause(DefaultClausePermissionHandler.java:52)	at com.atlassian.jira.issue.search.managers.DefaultSearchHandlerManager.getVisibleClauseHandlers(DefaultSearchHandlerManager.java:184)