Ssl – How to debug curl? gnutls_handshake failed -unexpected TLS packet (OpenSSL)

How can I debug curl error further when Apache error.log is not showing any?

(35) gnutls_handshake() failed: An unexpected TLS packet was received.

curl -v https://example.com
* Rebuilt URL to: https://example.com/
*   Trying 127.0.0.1...
* Connected to example.com(127.0.0.1) port 443 (#0)
* found 151 certificates in /etc/ssl/certs/ca-certificates.crt
* found 612 certificates in /etc/ssl/certs
* ALPN, offering http/1.1
* gnutls_handshake() failed: An unexpected TLS packet was received.
* Closing connection 0

Ubuntu 16.04, apache2 working with SSL.

UPDATE:

echo | openssl s_client -connect example.com:443

CONNECTED(00000003)
139626124003072:error:1408F10B:SSL routines:ssl3_get_record:wrong version number:../ssl/record/ssl3_record.c:252:
---
no peer certificate available
---
No client certificate CA names sent
---
SSL handshake has read 5 bytes and written 176 bytes
Verification: OK
---
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1.2
    Cipher    : 0000
    Session-ID:
    Session-ID-ctx:
    Master-Key:
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1531383152
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
    Extended master secret: no
---

UPDATE2 – SOLVED

Had a blank line in my chain file and RootCA was not properly installed on the server i run openssl command from.