EventSystem problem

I am having a strange problem with the EventSystem.
Suddenly, I got an error saying that there were 2 of them in the scene.
But at runtime, I check and there’s only one.
However, while checking, I discover that a script is missing, and of course I don’t know which one.

Additionally, I tried to remove the visible EventSystem object, and… the scene works anyway.
Now tell me what is the sense of all this?
Where is this ghost EventSystem???
What should I do?
Any help is appreciated.

P.S.: I’m also getting an error that may or may not be related, with PlayMaker:

7574149--938152--upload_2021-10-15_10-35-22.png

This happens when I am pressing a key and turning off an object and on another one, where the same keyboard check happens, which is… an event, I guess.
This scene is working WITHOUT any EventSystem object in it.
I can move the player etc. but when I try to switch between the two objects, the player freezes and I get this error.

Still saying that there are 2 EventSystem, while there’s not even ONE!

Just two ideas, obviously I have no idea of your knowledge-level, so if it’s too trivial, sorry, you didn’t really write too much about your problem…

  • have you cleared the console? are you sure these are current messages?
  • have you tried to search the hierarchy? “t:EventSystem” without quotes should reveal if you have any under any game objects