vue upload報400錯誤

<el-upload
        class="upload-demo"
        ref="upload"
        drag
        action="/api/expert/batch/insert"
        :headers="header"
        accept=".doc,.xls"
        :auto-upload="false"
        multiple>
        <i class="el-icon-upload"></i>
        <div class="el-upload__text">將文件拖到此處，或<em>點(diǎn)擊上傳</em></div>
        <div class="el-upload__tip" slot="tip">只能上傳doc,xls文件</div>

    </el-upload>
    
    
export default {
    data: function(){
        return {
            header:{
                'Accept': 'application/json',
                'x-auth-token': localStorage.getItem(TOKEN_KEY),
            },
        }
    },

還有另一個錯誤