triggerUncaughtException - error after uploading file

[timvol]

I'm using Node.js 16.14.2 and pCloud SDK 2.0.0. My script is the following:

const client = pcloud.createClient('bx...........................7y');
const { upload } = client;
try {
    upload('somefile.pdf', 0, {
        onBegin: () => console.log('begin'),
        onProgress: ({ loaded, total }) => console.log(loaded, total, (loaded / total * 100).toFixed(2) + '%')
    })
} catch (e) {
    console.log(e)
}

But then I see the following output:

begin
173 1844539 0.01%
65709 1844539 3.56%
131245 1844539 7.12%
196781 1844539 10.67%
262317 1844539 14.22%
327853 1844539 17.77%
393389 1844539 21.33%
458925 1844539 24.88%
524461 1844539 28.43%
589997 1844539 31.99%
655533 1844539 35.54%
721069 1844539 39.09%
786605 1844539 42.65%
852141 1844539 46.20%
917677 1844539 49.75%
983213 1844539 53.30%
1048749 1844539 56.86%
1114285 1844539 60.41%
1179821 1844539 63.96%
1245357 1844539 67.52%
1310893 1844539 71.07%
1376429 1844539 74.62%
1441965 1844539 78.17%
1507501 1844539 81.73%
1573037 1844539 85.28%
1638573 1844539 88.83%
1704109 1844539 92.39%
1769645 1844539 95.94%
1835181 1844539 99.49%
1844481 1844539 100.00%
1844539 1844539 100.00%
node:internal/process/promises:279
            triggerUncaughtException(err, true /* fromPromise */);
            ^

[UnhandledPromiseRejection: 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(). The promise rejected with the reason "#<Object>".] {
  code: 'ERR_UNHANDLED_REJECTION'
}

Any idea what might cause the issue?