uni fileupload真机调试报错

上传文件代码

uni.chooseImage({  
                count: 3, // 允许选3  
                sizeType: ['original'], //可以指定是原图还是压缩图，默认二者都有  
                sourceType: ['camera','album'], //从相册选择  
                success: function (res) {  
                    let files = res.tempFiles  
                    files.forEach(item =>{  
                        uni.showToast({  
                            title:'开始上传',  
                            icon:'none'  
                        })  
                        uni.uploadFile({  
                            url: 'http://xxx.udms.xxx.com/api/app/file/v1/uploa',  
                            file: item,  
                            classification: 'msbt',  
                            name:'myfile',  
                            header:{  
                              'accept': 'application/json',  
                              'X-Api-Authorization': wx.getStorageSync('token'),  
                              'x-request-sys': 'sysweb'  
                            },  
                            success:function(r){  
                                console.log(r)  
                                 let _res = JSON.parse(r.data)  
                                if(_res.code == 200){  
                                    self.uploadImages.push({  
                                        url: _res.data.filePath,  
                                        name: _res.data.fileId  
                                    })  
                                }  
                            }  
                        })  
                    })  
                }  
            })

在浏览器上传正常，在pda设备(android6)中报错，

TypeError: Cannot read property 'indexOf' of undefined  
    at wr ()  
    at   
    at createUploadTask ()  
    at rc ()  
    at uploadFile ()  
    at   
    at D ()  
    at Object.Hu.<computed>.Gu.<computed> [as uploadFile] ()  
    at eval (binning.js:53)  
    at Array.forEach (<anonymous>)

请问是什么原因导致的？谢谢