PHP Deprecated (Failed Ajax request or invalid JSON returned.) (OJS-3.4.0.5)

@jnugent ;

I’m encountering an issue again where I can’t generate a DOI for a newly published article.

I’m trying to export/deposit all [data/files/items], but I’m getting an error message.

Php Error Log:

[26-May-2024 05:25:21 UTC] PHP Deprecated:  Return type of Slim\Collection::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home/root/public_html/lib/pkp/lib/vendor/slim/slim/Slim/Collection.php on line 112

I successfully exported a DOI in the past. However, when I try to generate/export a DOI for a new article I just published, I receive an error message. Is there anything specific I should check for new articles?

I am looking for this in the ojs folder to try this code Not find DOI Plugin? - #25 by mgax

Best regards;

Darryl