Error reporting in to the BaseArrayHelper::getValue()

[lav45]

What steps will reproduce the problem?

error_reporting	strrpos(): Passing null to parameter #1 ($haystack) of type string is deprecated
line	209
code	8192
file	/var/www/vendor/yiisoft/yii2/helpers/BaseArrayHelper.php

Additional info

Q	A
Yii version	2.0.46
PHP version	8.1
Operating system	Linux