UnhandledPromiseRejectionWarning: Unhandled promise rejection
`/account/node_modules/iconfont-webpack-plugin/lib/loader.js:34:19
    at process._tickCallback (internal/process/next_tick.js:68:7)
(node:94934) 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: 3)`

npm -v 6.2.0
node -v 10.9.0