In your included application.conf, you have the line:
akka.stream.materializer = " "
I would try removing that first.
Also, in you jar files you have a scala 2.12 jar for akka-actor, and a 2.11
one for akka-remote. Probably not the cause of your issue, but it's also
unlikely to end well!
HTH,
Julian
On Wednesday, September 6, 2017 at 5:04:38 AM UTC+1, Joseph Mansigian wrote:
>
> Hi,
> I am getting an error I don't understand when I try to construct an
> ActorSystem using Scala 2.12, Akka 2.5.4, Java 8. The error message is
>
> *error com.typesafe.config.ConfigException$UnresolvedSubstitution:
> reference.conf: 826: Could not resolve substitution to a value:
> ${akka.stream.materializer}*
>
> The app does not use Akka Streams ( unless internally hidden from me ) so
> I am befuddled to see '${akka.stream.materializer}' mentioned in the error
> message.
>
> I am attaching the Scala program that tried to construct an ActorSystem (
> Agent.scala ), its application.conf and an include referenced by
> application.conf, a list of Akka, etc. jars used, and the execution result
> including stacktrace. When include was removed same problem. When
> ActiorSystem was constructed WITHOUT any conf files or parameters IT WORKED
> ( but I must have conf files for my app - include is nice but not necessary
> )
>
> Don't know how to get a handle on this.
>
> Thanks, Joe Mansigian
>
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