So I know this thread is an old one, but I wanted to say thank you to aGosh for his solution. Just saved my bacon with a super simple solution!
Thank you for this post! Still helping dummies like me out 7 years later! 
In case you are trying to teleport Player to position of cursor on world when some input is pressed, try this in PlayerController :
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wow life saver Thank u For This Save Calculation , MR Legend … <3
10 years later… and still working !!! Thank you so much !