相关疑难解决方法(0)

我有以下gulpfile.js,我正在通过命令行"gulp message"执行:

var gulp = require('gulp');

gulp.task('message', function() {
  console.log("HTTP Server Started");
});

我收到以下错误消息:

[14:14:41] Using gulpfile ~\Documents\node\first\gulpfile.js
[14:14:41] Starting 'message'...
HTTP Server Started
[14:14:41] The following tasks did not complete: message
[14:14:41] Did you forget to signal async completion?

我在Windows 10系统上使用gulp 4.这是gulp --version的输出:

[14:15:15] CLI version 0.4.0
[14:15:15] Local version 4.0.0-alpha.2