Job Failure: "could not determine windows version"

GitLab CI/CD
1

The runner reports an system error saying that:

Running with gitlab-runner 12.4.1 (05161b14)
  on Windows 10 Pro 1903 Docker 9rAAKdGg
ERROR: Preparation failed: could not determine windows version
Will be retried in 3s ...
ERROR: Preparation failed: could not determine windows version
Will be retried in 3s ...
ERROR: Preparation failed: could not determine windows version
Will be retried in 3s ...
ERROR: Job failed (system failure): could not determine windows version

What does it mean with “could not determine windows version” and how to solve this?

2

The same situation, please help

3

Seems that Windows with the base version 1903 is not supported yet.

Cheers,
Michael