PHP Deprecated: Return type of Requests_Utility_CaseInsensitiveDictionary::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /wp-includes/Requests/Utility/CaseInsensitiveDictionary.php

[codelyfe]

Here is the fix:

public function getIterator(): iterable { // Add 'iterable' to the return type
    return new \ArrayIterator($this->data);
}
#[\ReturnTypeWillChange] // Add the #[\ReturnTypeWillChange] attribute before the method declaration

[costdev]

Hi @codelyfe, welcome to Trac and thanks for opening this ticket!

This has been resolved as part of the upgrade of Requests (#54504) included in WordPress 6.2.

I'll close this ticket as a duplicate of #54504. Thanks a lot for this report! Hope you'll join in testing ​WordPress 6.2 RC3 and, after March 28th, WordPress 6.2!