How to fix an error C2027 AActor

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i call a function with parameter AActor and then it make an error c2027. How to fix it?
From ADEXPlayerCharacter to ADEXGameCharacter. from ADEXGameCharacter to ACharacter

in player controller class

 if (IsLocalPlayerController())
    {
    	if (UIClass_HUD)
    	{
    		if (!UIHUD_Widget)
    		{
    			ADEXPlayerCharacter* player_ch = Cast<ADEXPlayerCharacter>(GetCharacter());
    
    			if (player_ch) {
    				UIHUD_Widget = CreateWidget<UDEXUIBaseHUD>(this, UIClass_HUD);
    					
    				if (UIHUD_Widget) {
    					UIHUD_Widget->SetPlayerCharacter(player_ch);
    					UIHUD_Widget->AddToViewport();
    				}
    			}
    		}
    	}
    }

sry, updated img

Can oyu upload better image?

Can you show DEXPlayerCharacter.h?