just to be sure check if res and stream are available

Author: adrai

index.js

@@ -122,14 +122,14 @@ module.exports = (app, options) => {
               headers: {}
             })
           }
-          const stream = res.stream()
+          const stream = res && res.stream()
           return resolve({
             meta: {
               statusCode: 500,
               headers: {}
             },
             // fix issue with Lambda where streaming repsonses always require a body to be present
-            stream: stream.readableLength > 0 ? stream : require('node:stream').Readable.from('')
+            stream: stream && stream.readableLength > 0 ? stream : require('node:stream').Readable.from('')
           })
         }
         // chunked transfer not currently supported by API Gateway
@@ -177,7 +177,7 @@ module.exports = (app, options) => {
         resolve({
           meta: ret,
           // fix issue with Lambda where streaming repsonses always require a body to be present
-          stream: stream.readableLength > 0 ? stream : require('node:stream').Readable.from('')
+          stream: stream && stream.readableLength > 0 ? stream : require('node:stream').Readable.from('')
         })
       })
     })