curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to domain.com:443

I'm hitting my curl on ubuntu terminal and getting this response curl: (35) OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to domain.com:443 . I really can't understand why it happens. I tried to show curl's error number but it did not revert any no. I am hitting another server. Below is my command :

./curl -i --tlsv1.2 -kv -H "Content-Type: application/xml" --verbose -X POST --data /var/www/html/xml.xml --cacert /root/curl_ssl/curl-7.54.1/src/cert_org.crt domain.com/otp

Please suggest some help.