Calendar Sync in Thunderbird Errors

[stockphrase]

I receive the following error message when trying to sync my Thunderbird Lightning with ownCloud. Any help out there?

Undefined index: userid at /home/[blah, blah, etc.]

[ghost]

Hi,

please always post the full error log instead of such short snippets and also fill out the issue template provided here: https://raw.githubusercontent.com/owncloud/core/master/issue_template.md

But probably this is a duplicate of: owncloud/calendar#531

[schiessle]

please re-open a issue in the calendar repository (https://github.com/owncloud/calendar/issues) using the issue template as suggested by @RealRancor . If you think it is the same as owncloud/calendar#531 then please add your additional information to this issue. Thanks!