Player controller not attached to player -"CreateWidget cannot be used on Player Controller with no attached player. Player_Controller_C_0 has no Player attached."

[anonymous_user_3547627f1 (anonymous_user_3547627f)]

Im having an error with the player controller: “CreateWidget cannot be used on Player Controller with no attached player. Player_Controller_C_0 has no Player attached.”

This in turn doesnt let me use the UI and that add to viewport.
In both the gamemode under maps and modes and in the worldsettings I selected my Player_Controller.

Printing out the player controller like in the picture returns the name of it, so it is valid.
I am not sure why this problem came into existence, it suddenly appeared. TLDR: My player controller doesnt attach to the player.
I tried adding a delay after begin play so it may have time to initialize,
but that didnt work either

If someone could tell me where to even start debugging that would help a lot
the player character also has the correct controller selected; and the player bp is selected in gamemodes

[anonymous_user_3547627f1 (anonymous_user_3547627f)]

I also tried playing as client instead of standalone and the ui appears(not doing a multiplayer game though)

[Podgyhodgy]

I just had exactly this error. In my case it was because I had accidentally used a second player controller and assigned it to an AI character instead of assigning them an AI controller. And the character I was wanting to be an ai character would actually display widgets if it was used as a pawn by the player. Hence the error message.
Long and the short of it is you have two pawns that would be fine on their own and which want to display widgets when the game begins. That is not allowed.
Check what controllers each of your pawns has.