Merge pull request #6261 from Countly/hooks-filter-null-check

[fix] Hooks: Added null check for incoming data

Author: pnrgenc

CHANGELOG.md

@@ -5,6 +5,7 @@ Enterprise Features:
 
 Fixes:
 - [core] Unifying alphabetical order for dropdowns with dashboard apps
+- [hooks] Added null check for incoming data
 
 Enterprise Fixes:
 - [content] Asset URL was wrongly constructed when user switches between apps

plugins/hooks/api/parts/triggers/incoming_data.js

@@ -189,6 +189,9 @@ class IncomingDataTrigger {
          */
         function assertOperation(value, filterObj) {
             var matched = true;
+            if (typeof value === 'undefined' || value === null) {
+                return false;
+            }
             if (filterObj.$in && filterObj.$in.indexOf(value) === -1) {
                 matched = false;
             }