Sabre issue

[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://packagist.org/packages/kolab/calendar

I have successfully integrated the Kolab and when I open RoundCube I can see Calendar option from where I can add and remove event. But after event creation on calendar, that event is not Synced to Sogo. Upon debugging the issue, this is the error which I came across

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[20-Mar-2025 15:03:15 Etc/UTC] PHP Deprecated:  Return type of Sabre\VObject\Node::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /web/rc/vendor/sabre/vobject/lib/Node.php on line 83
[20-Mar-2025 15:03:15 Etc/UTC] PHP Deprecated:  Return type of Sabre\VObject\Node::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /web/rc/vendor/sabre/vobject/lib/Node.php on line 162
[20-Mar-2025 15:03:15 Etc/UTC] PHP Deprecated:  Return type of Sabre\VObject\Node::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /web/rc/vendor/sabre/vobject/lib/Node.php on line 177
[20-Mar-2025 15:03:15 Etc/UTC] PHP Deprecated:  Return type of Sabre\VObject\Node::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /web/rc/vendor/sabre/vobject/lib/Node.php on line 193
[20-Mar-2025 15:03:15 Etc/UTC] PHP Deprecated:  Return type of Sabre\VObject\Node::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /web/rc/vendor/sabre/vobject/lib/Node.php on line 213
[20-Mar-2025 15:03:15 Etc/UTC] PHP Deprecated:  Return type of Sabre\VObject\Node::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /web/rc/vendor/sabre/vobject/lib/Node.php on line 142


The sabre version installed through Kolab setup is

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sabre/vobject                 3.5.3    The VObject library for PHP allows you to easily parse and manipulate iCalendar and vCard objects
This seems that the version of sabre is not compatible.

Should I update it? If yes, wouldn't it cause compatibility issues with other libraries.

Has anyone ever faced this issue. Any help would be highly appreciated.

[SKaero]

I don't think that version of the calendar plugin is being updated anymore since it was last updated in 2021. Try manually using the version here: https://git.kolab.org/diffusion/RPK/browse/master/plugins/calendar/

[sheri207]

I don't think that version of the calendar plugin is being updated anymore since it was last updated in 2021. Try manually using the version here: https://git.kolab.org/diffusion/RPK/browse/master/plugins/calendar/

Hey this has worked.Thanks for sharing. Could you please help me on one more issue.

After integrating the Kolab plugin and we need to change the

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config.php file too. 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

[SKaero]

I'm not an expert on the calendar plugin so without digging into the code I don't know where to look for errors.