client internal error: failed to hear back from WebSocket driver

[RustMan88]

What went wrong?

#[cfg(test)]

mod tests {
use super::*;
use tendermint_rpc::{WebSocketClient, SubscriptionClient, Client};
use tendermint_rpc::query::EventType;
use futures::StreamExt;

#[tokio::test]
async fn test_ws() {
    let (client, driver) = WebSocketClient::new("wss://rpc-osmosis.keplr.app/websocket")
    .await
    .unwrap();
let driver_handle = tokio::spawn(async move { driver.run().await });

// Standard client functionality

// let tx = format!("some-key=some-value");
// client.broadcast_tx_async(Transaction::from(tx.into_bytes())).await.unwrap();

// Subscription functionality
let mut subs = client.subscribe(EventType::NewBlock.into())
    .await
    .unwrap();

// Grab 5 NewBlock events
let mut ev_count = 5_i32;

while let Some(res) = subs.next().await {
    let ev = res.unwrap();
    println!("Got event: {:?}", ev);
    ev_count -= 1;
    if ev_count < 0 {
        break;
    }
}

// Signal to the driver to terminate.
client.close().unwrap();
// Await the driver's termination to ensure proper connection closure.
let _ = driver_handle.await.unwrap();
}

}

Steps to reproduce

Definition of "done"