error from curl: SSL certificate problem: self signed certificate in certificate chain

[#1]

I am getting below response in the curl. is curl need valid certificate while create vhost., i have already created valid keystore.

curl: (60) SSL certificate problem: self signed certificate in certificate chain More details here: https://curl.haxx.se/docs/sslcerts.html curl performs SSL certificate verification by default, using a "bundle" of Certificate Authority (CA) public keys (CA certs). If the default bundle file isn't adequate, you can specify an alternate file using the --cacert option. If this HTTPS server uses a certificate signed by a CA represented in the bundle, the certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL). If you'd like to turn off curl's verification of the certificate, use the -k (or --insecure) option. HTTPS-proxy has similar options --proxy-cacert and --proxy-insecure. curl: (3) <url> malformed curl: (3) <url> malformed curl: (3) <url> malformed curl: (3) <url> malformed