If you try to access the system events admin dashboard and that a burnup daily event created before Tuleap 10.1.99.47 must be displayed, you will experience a crash.
Issue has been introduced by
request #11545.
Trace:
PHP message: PHP Catchable fatal error: Argument 1 passed to Tuleap\SystemEvent\SystemEventPresenter::__construct() must be an instance of SystemEvent, null given, called in /usr/share/tuleap/src/www/admin/system_events/index.php on line 103 and defined in /usr/share/tuleap/src/common/system_event/SystemEventPresenter.php on line 66