Function keeps returning boolean instead of array

I am working on a plugin and when I am testing it I keep getting an error I cannot solve.
Code
Error:

Code:

[23:18:20] [Server thread/CRITICAL]: Unhandled exception executing command 'f create Notgonnawork' in factionspp: Return value of HittmanA\factionspp\provider\YAMLProvider::getPlayer() must be of the type array, boolean returned

[23:18:20] [Server thread/CRITICAL]: TypeError: "Return value of HittmanA\factionspp\provider\YAMLProvider::getPlayer() must be of the type array, boolean returned" (EXCEPTION) in "FPP/src/HittmanA/factionspp/provider/YAMLProvider" at line 41

I have tried many ways of fixing the problem but I can't solve it.

 

No the config name does not have capital letters.

 

I did some testing and I found that the

PHP:

$player-getName()

(Link) is returning false for some reason. Why is that?

 

What is the contents of factions.yml?

 

Nothing which was the problem. Fixed it now.

 

Great, now you are supposed to post the answer for future reference, and mark as 'solved'.