Symfony version(s) affected

7.1.0-RC1

Description

In CharsetValidator.php line 41:

[TypeError]
implode(): Argument 2 ($array) must be of type ?array, string given

How to reproduce

$this->validator->validate(substr('á', 0, 1), new Assert\Charset('UTF-8'));

Possible Solution

CharsetValidator.php line 41: ->setParameter('{{ encodings }}', implode(', ', (array) $constraint->encodings))

Additional Context

No response