Gulp 一口；流程终止，代码为“1”；

您好，我正在尝试从教程中的gulp文件运行任务：

var gulp = require('gulp'),
    concat = require('gulp-concat'),
    cssmin = require('gulp-cssmin'),
    uglify = require('gulp-uglify');

var paths = {
    webroot: "./wwwroot/"
};

paths.bootstrapCss = "./bower_components/bootstrap/dist/css/bootstrap.css";
paths.sbAdminCss = "./bower_components/startbootstrap-sb-admin-2/dist/css/sb-admin-2.css";
paths.fontAwesomeCss = "./bower_components/font-awesome/css/font-awesome.css";
paths.morrisCss = "./bower_components/morrisjs/morris.css";

paths.jqueryJs = "./bower_components/jquery/dist/jquery.js";
paths.raphaelJs = "./bower_components/raphael/raphael.js";
paths.morrisJs = "./bower_components/morrisjs/morris.js";

paths.fonts = "./bower_components/font-awesome/fonts/*";

paths.jsDest = paths.webroot + "js";
paths.cssDest = paths.webroot + "css";
paths.fontDest = paths.webroot + "font";

gulp.task("min:js", function () {
    return gulp.src([paths.jqueryJs, paths.raphaelJs, paths.morrisJs])
    .pipe(concat(paths.jsDest + "/min/site.min.js"))
    .pipe(uglify())
    .pipe(gulp.dest("."));

});

gulp.task("copy.css", function () {
    return gulp.src([paths.bootstrapCss, paths.sbAdminCss, paths.fontAwesomeCss])
    .pipe(gulp.dest(paths.cssDest));
});
gulp.task("copy:js", function () {
    return gulp.src([paths.jqueryJs, paths.raphaelJs, paths.morrisJs])
    .pipe(gulp.dest(paths.jsDest));
});
gulp.task("copy:css", function () {
    return gulp.src([paths.bootstrapCss, paths.sbAdminCss, paths.fontAwesomeCss])
    .pipe(gulp.dest(paths.cssDest));
});
gulp.task("copy:fonts", function () {
    return gulp.src([paths.fonts])
    .pipe(gulp.dest(paths.fontDest));
});
gulp.task("min:css", function () {
    return gulp.src([paths.bootstrapCss, paths.sbAdminCss, paths.fontAwesomeCss])
    .pipe(concat(paths.cssDest + "/min/site.min.css"))
    .pipe(cssmin())
    .pipe(gulp.dest("."));
});
gulp.task("min", ["min:js", "min:css:"]);
gulp.task("copy", ["copy:js", "copy:css", "copy:fonts"]);

复制任务工作，但min返回“进程以代码1终止”。我不确定我写错了什么。仔细检查了所有内容，但没有结果

该“最小”吞咽任务具有无效的依赖项

“min:css:”应该是“min:css”。注意后面的“：”

最小“吞咽任务具有无效的依赖项

“min:css:”应该是“min:css”。注意后面的“：”