Sorry about that, I just tried to create a task with conduit createtask as it is currently failling on freedesktop server with Argument 1 passed to array_fuse() must be of the type array, null given, called in /srv/phabricator.freedesktop.org/phabricator/src/applications/maniphest/editor/ManiphestTransactionEditor.php on line 834 and defined as 'error info'.
It is working with that instance and was expecting it to fail the same way. Looks like I can not close the task myself.