*UnhandledPromiseRejectionWarning: Error: alas
    at *promise_unhandled_warn_with_error.js:*:*
    at *
    at *
    at *
    at *
    at *
    at *
(Use `* --trace-warnings ...` to show where the warning was created)
*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(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)