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PHP Error after upgrading to PHP 8.1


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we are getting following error 

PHP Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is deprecated in /.... /wire/core/WireInput.php:371

after upgrading to php 8.1 

Anyone else having this problem?

Just for reference, changing line 371 from 

if(!strlen($key)) return $this->cookieVars;


if(!$key || !strlen($key)) return $this->cookieVars;

seems to solve the problem. 

Edited by bbeer
added possible solution
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