Edit: See @Edgar answer. subjectAltNameseems to have become a requirement for self-signed certificates with Chrome 58.
It seems that the OP has also addressed this issue in the Google Help Community . Response from the Google Help community:
"I see that you are using Chrome Beta, which is an experimental version of Chrome that is testing new features. I would recommend using Chrome Stable, which received full testing and is an updated version. To avoid crashes and other problems."
. wss://localhost Chrome 59 (Canary/Beta) .
. , - Chromium #378566 - . , wss:// , . Chrome 59 (Canary/Beta), .