[server-stats] Fix data point calculation

Author: widatama

plugins/server-stats/api/parts/stats.js

@@ -246,7 +246,7 @@ function fetchDatapoints(db, filter, options, callback) {
         if (options.monthlyBreakdown) {
             const dataPoints = result
                 .reduce((acc, current) => {
-                    let dp = current.e + current.s;
+                    let dp = (current.e || 0) + (current.s || 0);
 
                     if (/^\[CLY\]_consolidated/.test(current._id)) {
                         // do not count consolidated dp for countly hosted clients
@@ -415,4 +415,4 @@ function getAppName(appId, appNames) {
 }
 
 
-module.exports = {updateDataPoints, isConsolidated, increaseDataPoints, punchCard, fetchDatapoints, getTop, getAppName, internalEventsEnum};
+module.exports = {updateDataPoints, isConsolidated, increaseDataPoints, punchCard, fetchDatapoints, getTop, getAppName, internalEventsEnum};