[Win/Linux] StatusRuntimeException: UNAVAILABLE: io exception in some OS

[ignasi35]

Refs https://discuss.lightbend.com/t/lagom-grpc-example/7279/9

Two different users report issues trying out the grpc-samples in Linux and Windows (but successfully run them on macOS).

This issue needs a lot of details to make sure we can narrow down the scenario where to reproduce it. Details could include:

1. commit SHA-1 in https://github.com/lagom/lagom-samples/
2. project run (is it grpc-example-java or grpc-example-scala or both?)
3. JDK version and vendor (Oracle, AdoptOpenJDK, Zulu, ... 1.8_u262)
4. sbt version
5. OS version

[Victorblsilveira]

1. Commit SHA-1: d6b8207
2. Project run: grpc-example-scala. I did'nt run the java version
3. JDK vendor: Oracle - Version 1.8_u262
4. Sbt version - 1.3.13
5. Windows Build 19041.508 and WSL-2 with Linux 20Lts