Index: ssts-qualitymon/src/main/java/com/forgon/disinfectsystem/qualitymonitoringmanager/qualitymonitoring/service/QualityMonitoringManagerImpl.java
===================================================================
diff -u -r14925 -r15087
--- ssts-qualitymon/src/main/java/com/forgon/disinfectsystem/qualitymonitoringmanager/qualitymonitoring/service/QualityMonitoringManagerImpl.java	(.../QualityMonitoringManagerImpl.java)	(revision 14925)
+++ ssts-qualitymon/src/main/java/com/forgon/disinfectsystem/qualitymonitoringmanager/qualitymonitoring/service/QualityMonitoringManagerImpl.java	(.../QualityMonitoringManagerImpl.java)	(revision 15087)
@@ -8,6 +8,7 @@
 import java.util.Map;
 
 import net.sf.json.JSONArray;
+import net.sf.json.JSONNull;
 import net.sf.json.JSONObject;
 
 import org.apache.commons.lang.StringUtils;
@@ -390,8 +391,11 @@
 			}
 			JSONArray array = JSONArray.fromObject(qualityMonitoringItems);
 			for (Object object : array) {
-				QualityMonitoring item = (QualityMonitoring) JSONObject.toBean(
-						(JSONObject) object, QualityMonitoring.class);
+				QualityMonitoring item = null;
+				if(object != null && !(object instanceof JSONNull)){
+					item = (QualityMonitoring) JSONObject.toBean(
+						    (JSONObject) object, QualityMonitoring.class);
+				}
 				if (item == null) {
 					continue;
 				}