Couldn't build an actor materializer settings. akka.stream.materializer config path is not defined. #2263
Description
Couldn't build an actor materializer settings. `akka.stream.materializer` config path is not defined.
at Akka.Streams.ActorMaterializerSettings.Create(ActorSystem system)
at RxStreams\Program.cs:line 27
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
is thrown when the following code is executed with default config (no HOCON):
using (var sys = Akka.Actor.ActorSystem.Create("TestSystem"))
{
var settings = ActorMaterializerSettings.Create(sys); // fails
}Materializer factory copes with this by injecting the default configuration
system.Settings.InjectTopLevelFallback(DefaultConfig());I guess ActorMaterializerSettings needs a default fallback too.