Container crashes due to unhandled errors

[danielelisi]

The keygen container crashes and restart with the following error

node:internal/process/promises:246
          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 "#<HttpResponseError>".] {
  code: 'ERR_UNHANDLED_REJECTION'
}

This could be one of the causes of Taquito integration tests sometimes hanging or timing out. We need to investigate the issue further.