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https://issues.apache.org/jira/browse/OFBIZ-6637?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14877196#comment-14877196 ]
Adrian Crum commented on OFBIZ-6637:
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It might be caused by having a recurring work effort that uses a temporal expression.
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