I can not add cookies to WebSocket script

Hello! I’m just starting to get acquainted with Gatling.

Trying to write a script to connect to WebSocket. I get an error when starting: [ERROR] i.g.h.a.c.AddCookieBuilder$$anon$1 - ‘addCookie-1’ failed to execute: Neither cookie domain nor baseUrl. and 400 Bad request

Now it looks like this: