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kotlinlang

```mainScope.launch {

            try{
                val attr1 = async(<http://dispatchers.IO|dispatchers.IO>) { networkUser.setUserAttrs(userId, mappedServerData.weight).blockingFirst() }catch(){} }```

<https://github.com/Kotlin/kotlinx.coroutines/tree/master/reactive/kotlinx-coroutines-rx2>

<https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-rx2/kotlinx.coroutines.rx2/io.reactivex.-single-source/await.html>

Because an exception isn’t thrown by the `async` function if the provided block throws an exception. You need to wrap your `.await()` call. ```
val attr1Async = async(IO) { ....blockingFirst() }
try {
    attr1Async.await()
} catch (...) {
    ...
}```

check below, the call is wrapped, that sample is not complete