RoundCube Calendar events are not syncing with Sogo

[sheri207]

Hello!

I was working on integration of calendar in Roundcube. I have Mailcow Suite where I am have installed Rouncube. As Roundcube does not have any official calendar plugin, I used Kolab plugin. The documentation I followed was of this below link attached. Although the steps were bit different as I am using Dockerized Mailcow

Link of Kolab:  https://git.kolab.org/diffusion/RPK/browse/master/plugins/calendar/

After integrating the Kolab plugin and we need to change the

Code Select Expand

config.php file. So these following variables were changed according to my requirement

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$config['calendar_driver'] = "caldav";
$config['calendar_caldav_server'] = "https://mail.example.com/SOGo/dav/";
$config['calendar_caldav_url'] = 'https://mail.example.com/SOGo/dav/%u/Calendar/';

Now when I try to create an event on Roundcube it fails. Upon element inspect on Chrome, the request is failing with this payload

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{
    "action": "event",
    "exec": "this.display_message(\"Failed to save changes.\",\"error\",0);\n",
    "callbacks": [
        [
            "plugin.unlock_saving",
            false
        ],
        [
            "plugin.refresh_calendar",
            {
                "source": ""
            }
        ]
    ]
}

Docker logs are fine and showing no error. What issue it can be. Is there any way to debug it