Symfony version(s) affected

6.1

Description

With PHP 8.1 this line is triggering an error and deprecation https://github.com/symfony/symfony/blob/6.1/src/Symfony/Component/Security/Http/RememberMe/RememberMeDetails.php#L40

Warning: Undefined array key 1
Deprecated: base64_decode(): Passing null to parameter #1 ($string) of type string is deprecated

How to reproduce

base64_decode(null, true)

Possible Solution

No response

Additional Context

No response