disable ignore unknowns to see why the event fails to parse.

Author: PartiallyUntyped

aws-lambda-java-serialization/src/main/java/com/amazonaws/services/lambda/runtime/serialization/factories/JacksonFactory.java

@@ -148,7 +148,7 @@ private static JsonFactory createJsonFactory() {
         factory.disable(JsonParser.Feature.STRICT_DUPLICATE_DETECTION);
 
         //Json Generator enabled
-        factory.enable(JsonGenerator.Feature.IGNORE_UNKNOWN);
+        factory.disable(JsonGenerator.Feature.IGNORE_UNKNOWN);
 
         //Json Generator disabled
         factory.disable(JsonGenerator.Feature.AUTO_CLOSE_JSON_CONTENT);