[SOLVED] [5.0/5.1] Alerts for deleted activities

Hello,

I have an issue since I deleted activities in 5.0, I receive alerts for these delete activites. These alerts are empty since deleted (see screenshot).

In table indicatorvalue, I found refType Activity and refId for unknown ids in table activity, they should have been deleted when I deleted activities.

I received and still receives a lot of them, how can I fix it? Can you make it not happen again?

Thank you,

We still receive some of them.
On administration screen, I can only delete past alerts (sent since X days), not future alerts.

Using ProjeQtOr 5.1.2.