Finish Hotfix-20190605

cmsWebApp/src/performa/form/SendUserInvitationFP.java

@@ -116,7 +116,7 @@ public class SendUserInvitationFP extends SaveFP
             for (HiringTeamLinkNPO teamLinkNPO : inviteTeammate.getHiringTeamsSet())
             {
                 // avoid adding link to same team twice
-                if(!existingTeams.contains(teamLinkNPO.getHiringTeam()))
+                if(!existingTeams.contains(teamLinkNPO.getHiringTeam()) && teamLinkNPO.getHiringTeam() != null)
                 {
                     CompanyUserHiringTeamLink teamLink  =   CompanyUserHiringTeamLink.createCompanyUserHiringTeamLink(objTran);