请求Axios发布vuejs:空数据

我在axios发布请求时遇到了问题,我总是按照以下步骤发送数据,它仍然有效,但今天不起作用。axios发送了空数据,但在控制台日志中我有数据。当我用邮递员测试时,一切正常,所以我认为问题出在查询级别。经过几次搜索,我发现我使用的方法很好,但为什么它不起作用。如果我只发送一个数据,它就起作用了。谢谢你的帮助

<template>
    <div>
        <form class="form-CreateOption" method="post" v-on:submit.prevent="Submit">
            <div>
                <p>Nom de l'option* </p>
                <input type="text" name="nameOption" v-model="nameOption" id="nameOption">
            </div> 
            <div>
                <p>Description*</p>
                <textarea class="detailOption" name="descriptionOption" id="" cols="30" rows="10" v-model="descriptionOption"></textarea>
            </div>
            <div>
                <p>Prix*</p>
                <input type="text" name="priceOption" v-model="priceOption">
            </div>
            <div>
                <p>Image*</p>
                <input name="imageUrlOption" type="file" @change="uploadOneFileOption($event)">
            </div>
            <div>
                <button type="submit">Create</button>
            </div>
        </form>
    </div>
</template>

<script>
import axios from 'axios'
export default {
    name:'CreateOption',
    data(){
        return{           
            nameOption:"",
            descriptionOption: "",
            priceOption: "",
            imageUrlOption:""
        }
    },
    methods:{
        uploadOneFileOption(event){
            console.log(event)
            this.imageUrlOption = event.target.files[0];
        },
        Submit(){
            let token= localStorage.getItem('token')
            const header = {
                headers: {
                    'Content-type': 'application/json',
                    'Authorization': `Bearer ${token}`
                }
            }
            const formDatas = new FormData();
            console.log(formDatas.append)
            formDatas.append('nameOption', this.nameOption)
            formDatas.append('descriptionOption', this.descriptionOption)
            console.log(this.descriptionOption)
            formDatas.append('priceOption', this.priceOption)
            console.log(this.nameOption)
            formDatas.append('imageUrlOption', this.imageUrlOption) 
       
            axios.post('http://localhost:3000/api/option/create-option',formDatas,header)
            .then((response) => {
                console.log(response)
            }).catch((err) => {
                console.log({err: err})
            });
        }
    }
}
</script>

console.log

nameOption

FormData

postman with image

postman without image

Backend