Problem after 9326 upgrade

After we upgraded to 9326 there have been 3 stops with SPD in a week. Service restart fix it. Logfile show this:

[10:23:31:193]|[10-18-2017]|[com.adventnet.servicedesk.utils.MSPFactory]|[INFO]|[108]|: Exception creating instance of class com.adventnet.mspdesk.util.AccountUtil|
[10:23:31:193]|[10-18-2017]|[com.manageengine.framework.sqlbuilder.AQBManager]|[SEVERE]|[108]|: Error ignored : null|
[10:23:31:193]|[10-18-2017]|[SYSERR]|[INFO]|[108]|: java.lang.NullPointerException|
[10:23:31:193]|[10-18-2017]|[SYSERR]|[INFO]|[108]|: at com.manageengine.framework.sqlbuilder.AQBManager.hasManyRelationship(AQBManager.java:2034)|
[10:23:31:193]|[10-18-2017]|[SYSERR]|[INFO]|[108]|: at com.manageengine.framework.sqlbuilder.AQBManager.getTableDetails(AQBManager.java:1465)|