Error: subscribe failed: Method not found (-32601)

[westchiral]

Hi, Thanks for your codebase.
I've been trying to run the part of the code but faced the same weird error like Error: subscribe failed: Method not found (-32601).
Have you ever seen such error?

let (mut stream, _) = ws_client
.logs_subscribe(
RpcTransactionLogsFilter::Mentions(vec![CONFIG.raydium_lpv4.to_string()]),
RpcTransactionLogsConfig {
commitment: Some(CommitmentConfig::finalized()),
},
)
.await?;