fixed issue with v5 groups api

Author: Dushyant Bhalgami

src/java/main/com/topcoder/direct/services/view/action/contest/launch/GetContestAction.java

@@ -474,7 +474,7 @@ protected void executeAction() throws Exception {
         List<ProjectGroup> projectGroups = DirectUtils.getGroupIdAndName(
                 softwareCompetition.getProjectHeader().getGroups());
 
-        if (this.type == TYPE.CONTEST_JSON) {
+        if (projectGroups != null && this.type == TYPE.CONTEST_JSON) {
             // get v5 id of groups
             Set<Map<String, String>> projectGroupUser = DirectUtils.getGroups(DirectUtils.getTCSubjectFromSession(),
                     userGroupsApiEndpoint);