我正在尝试使用nodejs并使用mongoose将文档保存到mangoDB，但我设置为required的name验证：真的不行。虽然我没有设置名称字段的文件得到保存。我的代码中有什么遗漏吗

const courseSchema = new mongoose.Schema({
    name: {type:String, requried:true},
    author: String,
    tags: [ String ],
    date: Date,
    isPublished: Boolean,
    price: Number
});
const Course = mongoose.model('Course',courseSchema);

async function createCourse() {
    try {
        const course = new Course({
            author: "Srikanth xyz",
            tags: ['express','js'],
            isPublished: true,
            price: 15
        });
        const result = await course.save();
        console.log(result);    
    } catch (error) {
        console.log("ERROR: " + error.message);
    }

}
createCourse();