Discussion on: Building a real-time data streaming app with Apache Kafka

Hi, thanks for the tutorial.
I tried following the steps but I am getting the following error when running ./start.sh

(node:10533) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'length' of undefined
at /mnt/c/Users/thomastai/Projects/kafka_producer_consumer_tutorial/node_modules/kafka-node/lib/protocol/protocol.js:483:27
at Array.forEach ()
at _encodeMetadataRequest (/mnt/c/Users/thomastai/Projects/kafka_producer_consumer_tutorial/node_modules/kafka-node/lib/protocol/protocol.js:482:10)
at Object.encodeMetadataV1Request as encoder
at /mnt/c/Users/thomastai/Projects/kafka_producer_consumer_tutorial/node_modules/kafka-node/lib/kafkaClient.js:912:41
at /mnt/c/Users/thomastai/Projects/kafka_producer_consumer_tutorial/node_modules/async/dist/async.js:3880:24
at replenish (/mnt/c/Users/thomastai/Projects/kafka_producer_consumer_tutorial/node_modules/async/dist/async.js:1011:17)
at /mnt/c/Users/thomastai/Projects/kafka_producer_consumer_tutorial/node_modules/async/dist/async.js:1016:9
at eachOfLimit (/mnt/c/Users/thomastai/Projects/kafka_producer_consumer_tutorial/node_modules/async/dist/async.js:1041:24)
at /mnt/c/Users/thomastai/Projects/kafka_producer_consumer_tutorial/node_modules/async/dist/async.js:1046:16
(node:10533) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:10533) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.