Issue with Event Creation Using Circles - "Could not find organizer" Error

Steps to reproduce

• Create a Circle (team) in Nextcloud.
• Create a new calendar event and invite the Circle as participants.

Expected behavior

The event should be created successfully with the members of the Circle invited as participants, and the organizer field should be correctly assigned.

Actual behaviour

The event fails to create with the error message mentioned above, and the log shows the "Could not find organizer" exception. It seems that there is an issue with the synchronization of Circle members or the identification of the event organizer.

Calendar app version

No response

CalDAV-clients used

No response

Browser

No response

Client operating system

No response

Server operating system

No response

Web server

None

Database engine version

None

PHP engine version

None

Nextcloud version

No response

Updated from an older installed version or fresh install

None

List of activated apps

Nextcloud configuration

Web server error log

Log file

Browser log

Additional info

When trying to create an event in Nextcloud and invite a team (Circle) I created, I encounter two issues:

The message:
"Note that members of circles get invited but are not synced yet."

The following error in the logs:
"ServiceException: Could not find organizer"

Additional Information:
I’ve verified that the Circle members are correctly configured and present in Nextcloud.
I’ve checked permissions and made sure my account has the necessary rights to create events.
I have tried creating events without using Circles, and it works fine, which suggests the issue is related specifically to the use of Circles.

Start by reproducing the event-creation steps with a Circle participant and inspect the reported "Could not find organizer" exception, comparing them with event creation without Circles. Done means Circle members are invited successfully, the organizer is assigned, and the related synchronization message no longer prevents event creation.