Add conditional for email

utils/Jenkinsfile

@@ -44,7 +44,11 @@ pipeline {
             '''
         }
         failure {
-            emailext body: '$DEFAULT_CONTENT', subject: '$DEFAULT_SUBJECT', to: '$DEFAULT_RECIPIENTS'
+            script {
+                if ( fileExists ('severity.json')) {
+                    emailext body: '$DEFAULT_CONTENT', subject: '$DEFAULT_SUBJECT', to: '$DEFAULT_RECIPIENTS'
+                }    
+            }    
         }
     }   
 }
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