Fix for exception thrown when LexV2 responsebot matches Fallback intent

aws-solutions · Jul 7, 2021 · 83a88da · 83a88da
1 parent dc9f6bd
commit 83a88da
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lambda/fulfillment/lib/middleware/lexRouter.js b/lambda/fulfillment/lib/middleware/lexRouter.js
@@ -167,7 +167,7 @@ async function handleRequest(req, res, botName, botAlias) {
             console.log("Lex V2 parameters: " + JSON.stringify(params));
             const lexv2response = await lexV2ClientRequester(params); 
             console.log("Lex V2 response: " + JSON.stringify(lexv2response));
-            response.message = lexv2response.messages[0].content;
+            response.message = _.get(lexv2response, 'messages[0].content', '');
             // lex v2 FallbackIntent match means it failed to fill desired slot(s).
             if (lexv2response.sessionState.intent.name === "FallbackIntent" || 
                 lexv2response.sessionState.intent.state === "Failed") {