gulp打包报错 “Error: Unhandled 'error' event at new JS_Parse_Error”

npm install --save-dev gulp-babel babel-core babel-preset-es2015 

var gulp = require('gulp'),
babel = require("gulp-babel");

gulp.task('minjs', function () {
gulp.src(src_js+'/**/*.js')
.pipe(babel())
.pipe(uglify())
.pipe(gulp.dest(dest_js));
});