Event On Begin Play Disapear of my Game modes and BPs

Project was fine yesterday, but now the event On Begin Play disappeared from all my BPs and game modes. I can still call it, but it does nothing. Any idea what could be going on? Thanks in advance!

You can click on “Open Full Blueprint” to return to the normal event graph view.


Didn’t work, and it doesn’t show on my other BPs either.

Try to add the event begin from the context menu from the Event Graph:

The event begin play also won’t show up in the detail panel.

Yes, that’s worked, but I have not idea why is not showing in anywhere else.