WebSocket request dumps sc-machine

[artrayme]

Describe the bug
I sent a requst "qwe" to the sc-machine WebSocket server, but sc-machine just say "core dumped".

To Reproduce
Steps to reproduce the behavior:

1. Up sc-machine with WebSocket server
2. Open any WebSocket client and connect to "ws://localhost:8090". I've used plugin for vscode "WebSocket Client"
3. Send message "qwe" (without "")
4. See core dumped in sc-mechine logs

Expected behavior
Response with an error message "invalid command" or smth like that.

Screenshots

Desktop (please complete the following information):

• Official docker image
• Last updates of sc-machine (from this repo)

Additional context
Full logs:
log.txt