Curl error 1: Protocol "wss" not supported or disabled in libcurl

Unity Engine
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1

Curl error 1: Protocol “wss” not supported or disabled in libcurl
I get this message 1-2 times when connecting to a websocket. The connection works fine, but the error message is annoying and I want to ship an asset, so users get confused.
I found the same issue with https in the forums, but not wss and the most recent issue was 2018, they said it was fixed.

2

UnityWebRequest does not support web sockets.

3

I am not using webrequests for wss, I am using:
using System.Net.WebSockets;
As I said, it works, but I still get the error message, which is annoying.