Hi,
I can create a meeting but :

When I try to open it by clicking on it, Ive got this error :

Error:

Traceback:
Error: dict.widget.isMEventSyncedAndArchivable is not a function
anonymous@https://odoo.onhys.com/web/content/1325-b316da1/web.assets_common.js line 4426 > Function:61:21
_render@https://odoo.onhys.com/web/content/1325-b316da1/web.assets_common.js:4425:296
render@https://odoo.onhys.com/web/content/1325-b316da1/web.assets_common.js:4425:151
renderElement@https://odoo.onhys.com/web/content/1325-b316da1/web.assets_common.js:4940:775
_widgetRenderAndInsert/<@https://odoo.onhys.com/web/content/1325-b316da1/web.assets_common.js:4950:6

The server log don't display any error !

Thanks.