Meteor SimpleSchema/Collection2插入异常

我正在尝试获取一个文本字段，以便在我的集合中插入字符串。我得到了这个错误：

Exception while invoking method 'categories.insert' TypeError: func is not a function
     at /var/www/node/lover/node_modules/simpl-schema/dist/doValidation.js:359:18
     at Array.forEach (native)
     at doValidation (/var/www/node/lover/node_modules/simpl-schema/dist/doValidation.js:358:17)
     at ValidationContext.validate (/var/www/node/lover/node_modules/simpl-schema/dist/ValidationContext.js:217:57)
     at [object Object].doValidate (packages/aldeed:collection2-core/collection2.js:399:33)
     at [object Object].Mongo.Collection.(anonymous function) [as insert] (packages/aldeed:collection2-core/collection2.js:187:25)
     at [object Object].Meteor.methods.categories.insert (server/methods.js:14:21)
     at maybeAuditArgumentChecks (packages/ddp-server/livedata_server.js:1737:12)
     at packages/ddp-server/livedata_server.js:719:19
     at [object Object]._.extend.withValue (packages/meteor.js:1122:17)

这是我的模式：

import { Mongo } from 'meteor/mongo';

var Categories = new Mongo.Collection('categories');

const CategorySchema = new SimpleSchema({
    title: {
        type: String,
        label: "Title",
        max: 255,
        optional: true
    },
    created: {
        type: Date,
        label: "Date Category Created",
        autoValue: () => {
            if(this.isInsert){
                return new Date();
            } 
        }
    },
    updated: {
        type: Date,
        label: "Date Category Modified",
        autoValue: () => {
            if(this.isUpdate){
                return new Date();
            }
        }
    }
});

Categories.attachSchema(CategorySchema);

export default Categories;

要调用的方法：

import { check } from 'meteor/check';
import { Categories, Elections, Nominees, Users, Votes } from '../collections';

Meteor.methods({
    'categories.insert'(title){
        check(title, String);
        return Categories.insert({title: title});
    }
});

然后我称之为：

...
Template.settings.events({
    'click #newCategoryButton'(e){
        let title = $("#newCategoryInput").val();
        Meteor.call('categories.insert', title, (error, response) => {});
    }
});
...

如果我在insert语句中添加

{validate:false}

，我就可以让它工作，这让我相信这是一个验证问题。我浏览了所有的文档、一些博客和tut，但找不到关于如何在使用

collection2

和

simple schema

时将数据插入我的集合的任何说明（如果不是标准方式）。事实上，如果在上滚动几行，插入调用的显示形式基本上与我编写的相同

我不想通过insert调用传递

{validate:false}

，因为它首先破坏了向集合中添加架构的目的

迫切需要帮助，我在这件事上坚持了好几个小时