update

src/helper/outputUtils.js

@@ -7,6 +7,9 @@ class OutputUtils {
   }
 
   checkForChanges(output, format) {
+    if (!output || typeof output !== 'object') {
+      return {};
+    }
     const changedFields = {};
     for (const key in output) {
       if (output.hasOwnProperty(key) && output[key] !== this.output[format][key]) {
@@ -54,11 +57,11 @@ class OutputUtils {
             break;
 
           default:
-            console.log('Unknown format in output utils');
-            break;
+            return null;
         }
         return msg;
       }
+      return null;
   }