We have one review in Crucible that is completed, but when anyone clicks the 'Close' button, they get a 'Server Error' message, stating the following:
"URL: /json/cru/CR-608/changeStateAjax
A java.lang.NullPointerException was encountered
No further details were provided.
You are running release CR3.8.0 FE3.8.0 (201504271400192015-04-27)"
This only affects one review; all others are able to close.