Fix PHPStan

Author: dereuromark

phpstan.neon

@@ -16,7 +16,7 @@ parameters:
 		- '#Negated boolean expression is always false.#'
 		- '#Parameter \#1 \$.+ of function call_user_func_array expects .+, array.+ given.#'
 		- '#Cannot cast array\|string\|null to .+.#'
-		- '#Cannot cast non-empty-array\|non-empty-string to string#'
+		- '#Cannot cast non-empty-array\|non-falsy-string to string#'
 
 includes:
 	- vendor/cakedc/cakephp-phpstan/extension.neon