Sabre\DAV\Exception\NotFound Node with name personal was not found

[Norbert-D]

Hello I really like this app

Installed on roundcube 1.6.1, Nextcloud 26.02
PHP 8

plugin runs I can select the NC calendar

when I go to the invite it correctly shows me the conflicts

but on accept or reject etc. I get this error
"
Something happened badly, nothing have been added to your agenda Sabre\DAV\Exception\NotFound Node with name personal was not found
"
Nothing in the logs at all not on NC or roundcube
Any idea would help