We had KnowledgeTree 3.4.3 running prior to install ZuckerDoc to SugarOS4.5.1d.

Following the ReadMe.txt in ZuckerDoc 2.0d , we modified and copied files to the KT installation and they look OK.
When configuring the ZuckerDoc in Sugar, we put
KT_URL as https://myktdms.com
with other settings that exists in the KT installation.

Then click the Save Configuration button.
ZuckerDoc displays the following error:

ZuckerDocs Configuration

Configuration not OK: Error in KnowledgeTree Authentication: curl_exec error 60 SSL certificate problem, verify that the CA cert is OK. Details: error: 14090086: SSL routines: SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

Is this the problem that our SugarOS is on a https with self-certification? How can we configure the interfaces that our SugarOS (and KT installation) https cert is/are OK?

The curl_exec error indicates you need to handle the
CURLE_SSL_CACERT
exception during your curl_exec() call.

Use the curl_setopt() to set related options for self-signed SSL certificates and your HTTPS call should go through smoothly.