How to stop Unhandled Promise error when running node.js file in BigQuery?

I'm running the following node.js code in BigQuery but I'm getting an unhandled promise error:

I'm not too familiar with node.js - do I have to add a .catch() in there at the end?

const BigQuery = require('@google-cloud/bigquery');
const bigquery = new BigQuery({
  projectId: 'xxxxx',
  keyFilename: 'key.json'
});

const query = `SELECT total_amount, pickup_datetime, trip_distance
  FROM \`nyc-tlc.yellow.trips\`
  ORDER BY total_amount DESC
  LIMIT 1;`

bigquery.createQueryJob(query).then((data) => {
  const job = data[0];
  return job.getQueryResults({timeoutMs: 10000});
}).then((data) => {
  const rows = data[0];
  console.log(rows[0]);
});

Error:

(node:1035) 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:1035) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, p
romise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

Thanks