background download is not working at all in iOS.

[kp72-dev]

**Possible Unhandled Promise Rejection (id: 14):
Error: Lost connection to background transfer service
http://localhost:8081/index.bundle?platform=ios&dev=true&minify=false:178977:34
__invokeCallback@http://localhost:8081/index.bundle?platform=ios&dev=true&minify=false:2848:23
http://localhost:8081/index.bundle?platform=ios&dev=true&minify=false:2553:34
__guard@http://localhost:8081/index.bundle?platform=ios&dev=true&minify=false:2761:15
invokeCallbackAndReturnFlushedQueue@http://localhost:8081/index.bundle?platform=ios&dev=true&minify=false:2552:21
invokeCallbackAndReturnFlushedQueue@[native code]**

It is my error.
i have tried all the solutions from issues and suggestion of other users but not affection at all.

Here is my CODE.

RNFetchBlob
                .config({
                    IOSBackgroundTask:true,
                    // add this option that makes response data to be stored as a file,
                    // this is much more performant.
                    fileCache: true,
                    indicator:true,
                    path: dirs + fileName
                })
                .fetch('GET', file.title, {
                    //some headers ..
                })
                .then((res) => {
                   
                    console.log('The file saved to ', res.path())
                })

Tried solutions.
https://koenig-media.raywenderlich.com/uploads/2016/09/BM-EnableBackgroundFetch.png
#20
#234
#20
wkh237#448
Help if anyone can...
@joltup

[annucy]

You can try the solution mentioned in #426.

Not completely understood the solution. But it worked for me.