致命错误：在非对象上调用成员函数setProfileById（）

Question

var gulp = require('gulp');
var uglify = require('gulp-uglify');
var concat = require('gulp-concat');
var rename = require('gulp-rename');
var sass = require('gulp-ruby-sass');
var plumber = require('gulp-plumber');
var prefix = require('gulp-autoprefixer');
var sourcemaps = require('gulp-sourcemaps');

var options = {
    styles: {
        "source": "public/sass/main.sass",
        "destination": "public/css",
        "sourcemaps": "sourcemaps"
    },
    scripts: {
        "source": "public/js/*.js",
        "destination": "public/js/min",
        "sourcemaps": "sourcemaps"
    }
}

gulp.task('styles', function() {
return sass(options.styles.source, {sourcemap: true, style: 'compressed'})
    .pipe(plumber())
    .pipe(prefix("last 1 version", "> 1%", "ie 8", "ie 7"))
    .pipe(sourcemaps.write(options.styles.sourcemaps))
    .pipe(gulp.dest(options.styles.destination));
});

gulp.task('scripts', function() {
    return gulp.src(options.scripts.source)
        .pipe(plumber())
        .pipe(sourcemaps.init())
        .pipe(concat('all.js'))
        .pipe(gulp.dest(options.scripts.destination))
        .pipe(rename('main.js'))
        .pipe(uglify())
        .pipe(sourcemaps.write(options.scripts.sourcemaps, {includeContent: false, sourceRoot: '../../'}))
        .pipe(gulp.dest(options.scripts.destination));
});

gulp.task('default', ['styles', 'scripts'], function() {
    gulp.watch('public/sass/**', ['styles']);
    gulp.watch('public/js/**', ['scripts']);
});

第42行

A PHP Error was encountered
Severity: Notice
Message: Undefined property: CI::$analytics
Filename: libraries/MY_Ga_dashboard.php
Line Number: 42