Reading a Config File in Android from a Golang Bind Service

Question

I have a Golang program from which I have created a package using gomobile bind. It creates two files abcd.jar and abcd.aar. I have copied these 2 files to the lib folder in the Android Java App in Android Studio IDE. After that I am able to run the Android app which is using the Golang program as a service. For testing the Golang service I am Posting a json file at regular intervals and this works fine. I wanted to give the "Post URL" using a json configuration file. The following starting portion of the code works, as I am receiving the posted contents on the server

    request, _ := http.NewRequest("POST", "https://example.com/path", bytes.NewBuffer(data))
    request.Header.Set("Content-Type", "application/json; charset=UTF-8")
    _, _ = client.Do(request)

But I am running into issues after that as I suspect

jsonFile, errOpen := asset.Open("service_config.json")
if errOpen != nil {
       fmt.Println(errOpen)
   }

is not working, because for testing I repeat the code for Posting the Data to the server after the above code, which is not executing and the program crashes.

I have tried placing the "service_config.json" file under:

1. app/assets
2. app/src/main/assets
3. inside the golang package itself and visible in the .aar file

So is the problem due to the improper location of assets folder or do I need to give any permission for golang package to read the assets folder, or problem cause is something else? BTW, I see "fmt.Println" being used in some Golang program on the internet which is used in bind package, but wonder where the Println output can be viewed.