UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throw

报错

(node:5264) 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:5264) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are nothandled will terminate the Node.js process with a non-zero exit code.

原因：

被墙了，需要。