Dear Maintainer,

With Debian 12 and PHP 8.2, clicking "New Task" just opens an empty window.

I can see that /horde/nag/task.php?actionID=add_task returns 500, but there the
response is empty, and no PHP error is logged, so unfortunately I cannot
pinpoint the cause of the problem.

It seems that development of Horde has restarted, and there are some alpha
versions, mostly just fixing PHP compatibility bugs. While in general packaging
alpha versions might not be a great idea, in this case I think it might be
useful to do so, since Horde is essentially unusable in Debian 12.