C# StackExchange.Redis client failing to connect

Question

I have deployed a Redis instance and I'm trying to connect to it using StackExchange.Redis but i get the error  "It was not possible to connect to the redis server(s)".

```cs
using StackExchange.Redis;

namespace Redis
{
    public class Client
    {
        public static readonly ConnectionMultiplexer redis = ConnectionMultiplexer.Connect(
            new ConfigurationOptions()
            {
                EndPoints = { "redis://default:password@containers-us-west-174.railway.app:5494" }
            }
        );

public static double Ping()
       {
           var db = redis.GetDatabase();
           var ping = db.Ping();

return ping.TotalMicroseconds;
       }
    }
}
```

but if I connect using the cli it works