PHP SSL connection to MongoDB

I don’t use SELinux as they mentioned in PHP error: No suitable servers found

Without TLS:

{“t”:{“$date”:“2021-07-04T09:41:18.687Z”},“s”:“E”, “c”:“NETWORK”, “id”:23256, “ctx”:“ReplicaSetMonitor-TaskExecutor”,“msg”:“SSL peer certificate validation failed”,“attr”:{“error”:“SSL peer certificate validation failed: self signed certificate in certificate chain”}}