SSL Error on pyth hermes client

[0xruki]

When I use the pyth-hermes-client with the Hermes mainnet endpoint, I run into this error

Execute(reqwest::Error { kind: Request, source: hyper_util::client::legacy::Error(Connect, Ssl(Error { code: ErrorCode(1), cause: Some(Ssl(ErrorStack([Error { code: 167772294, library: "SSL routines", function: "tls_post_process_server_certificate", reason: "certificate verify failed", file: "ssl/statem/statem_clnt.c", line: 2106 }]))) }, X509VerifyResult { code: 20, error: "unable to get local issuer certificate" })) }) 

Any idea what's going on here?