Slack API issues with deserializing api payloads

[rasharab]

For one of our customers, we hit this deserialization issue with 1.45.2 of the sdk.

Got an exception while calling conversations.history API (team: ****, error: java.lang.IllegalStateException: Not a JSON Object: [])

j.l.IllegalStateException: Not a JSON Object: []
at c.g.gson.JsonElement.getAsJsonObject(JsonElement.java:165)
at c.s.a.u.j.GsonFileFactory.deserialize(GsonFileFactory.java:46)
at c.s.a.u.j.GsonFileFactory.deserialize(GsonFileFactory.java:8)
at c.g.g.i.b.TreeTypeAdapter.read(TreeTypeAdapter.java:95)
at c.g.g.i.b.ReflectiveTypeAdapterFactory$2.readIntoField(ReflectiveTypeAdapterFactory.java:267)
at c.g.g.i.b.ReflectiveTypeAdapterFactory$FieldReflectionAdapter.readField(ReflectiveTypeAdapterFactory.java:558)
at c.g.g.i.b.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:516)
... 40 common frames omitted
Wrapped by: c.g.g.JsonSyntaxException: java.lang.IllegalStateException: Not a JSON Object: []
at c.g.g.i.b.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:520)
at c.google.gson.Gson.fromJson(Gson.java:1361)
at c.google.gson.Gson.fromJson(Gson.java:1463)
at c.google.gson.Gson.fromJson(Gson.java:1434)
at c.g.g.i.b.TreeTypeAdapter$GsonContextImpl.deserialize(TreeTypeAdapter.java:199)
at c.s.a.u.j.GsonLayoutBlockFactory.deserialize(GsonLayoutBlockFactory.java:31)
at c.s.a.u.j.GsonLayoutBlockFactory.deserialize(GsonLayoutBlockFactory.java:12)
at c.g.g.i.b.TreeTypeAdapter.read(TreeTypeAdapter.java:95)
at c.g.g.i.b.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
at c.g.g.i.b.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:83)
at c.g.g.i.b.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:59)
at c.g.g.i.b.ReflectiveTypeAdapterFactory$2.readIntoField(ReflectiveTypeAdapterFactory.java:267)
at c.g.g.i.b.ReflectiveTypeAdapterFactory$FieldReflectionAdapter.readField(ReflectiveTypeAdapterFactory.java:558)
at c.g.g.i.b.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:516)
at c.g.g.i.b.TypeAdapterRuntimeTypeWrapper.read(TypeAdapterRuntimeTypeWrapper.java:40)
at c.g.g.i.b.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:...

[misscoded]

Hi @rasharab! Thanks for raising this issue. We'll be looking into this shortly and will circle back with you once we've had the chance to investigate + reproduce it.

[rasharab]

Just an FYI, we only hit this with one distinct customer while attempting to iterate messages from one of their slack channels, so I'm not sure how best we can create a repro for you guys.