Connect to Redis-Cluster

How can I connect to a Redis-Cluster? I am getting an error: 
```
"msg":"READONLY You can't write against a read only replica."
"msg":"http: superfluous response.WriteHeader call from github.com/alexedwards/scs/v2.(*sessionResponseWriter).WriteHeader (session.go:241)"
```

Is it possible to use Redis in Cluster Mode?