Scala code run from Intellij Worksheet doesn't seem to be able to find the akka actor resources.
The error is:
com.typesafe.config.ConfigException$Missing: No configuration setting found for key 'akka'
There is an opened ticket on Intellij bugtracker https://youtrack.jetbrains.com/issue/SCL-9229 with a work arround
A work around is unticking "Run worksheet in the compiler process" under "Preferences > Languages & Frameworks > Scala > Worksheet".
I tried and it worked. Please upvote the issue.
File > Other Settings > Default Settings > Languages & Frameworks > Scala > Worksheet
Not working for me