startBluetoothDevicesDiscovery 一直错误 10000

let _this = this;  
                uni.startBluetoothDevicesDiscovery({  
                    success(res) {  
                        console.log(res)  
                        callback && callback(res);  
                    },  
                    fail(res) {  
                        _this.bluetoothText = '蓝牙启动错误，正在尝试重新启动，错误码：' + res.errCode;  
                        console.log('尝试启动，错误码：' + res.errCode)  
                        setTimeout(() => {  
                            _this.bluetooth();  
                        }, 3000);  
                    }  
                });