A modern programming language that makes developers happier.

kotlinlang

~Hello! It's very possible that I am doing something wrong, or I am just confused, but I have some trouble with error handling, maybe someone can help?~ :pray:
~Basically, when I do `apolloCall.execute()`, in case of a network error (e.g. no internet, backend down), instead of a `ApolloNetworkException` to be raised, I get `java.util.NoSuchElementException: Flow is empty` . Which I can see being thrown by the `.first()` in `execute`'s implementation. This happens although I can see clearly that a `ApolloNetworkException` is thrown in `DefaultHttpEngine.execute()`.  Am I doing something wrong? Or what might be happening?~ :disappointed:
[Narrator] He was doing something wrong

Do you use the cache and a specific fetchPolicy maybe?

Yes, normalized cache is set up, but this query is using the NetworkOnly fetch policy

The error handling has become a bit complex there (see also <https://github.com/apollographql/apollo-kotlin/issues/4003>)

Looks like the `ApolloNetworkException` is caught somewhere and makes the `.first()` fail :thinking_face:

You're not using `.watch()` or anything like that, right?

&gt; Looks like the `ApolloNetworkException` is caught somewhere
Yeah, that seems to be the case, actually. Even if I do `toFlow().catch { Log.e(TAG, "error", it) }`, nothing ever gets logged.

Integration tests trigger an `ApolloNetworkException` as expected <https://github.com/apollographql/apollo-kotlin/commit/95ce6b84e71958fe8b4b9c2d1c7cc3a5612778ec>

The code is pretty simple:
```  fun networkOnly() = runTest(before = { setUp() }, after = { tearDown() }) {
    val query = HeroNameQuery()
    val data = HeroNameQuery.Data(HeroNameQuery.Hero("R2-D2"))

    val call = apolloClient.query(query).fetchPolicy(FetchPolicy.NetworkOnly)

    // First query should hit the network and save in cache
    mockServer.enqueue(query, data)
    val response = call.execute()```

ok, it was me, of course :man-facepalming:
I added an interceptor for logging, but I didn't rethrow the exception in the `catch` block

sorry for wasting your time :disappointed:

yeah, thank you for the quick response and pointing out that it's not the library :smile: